Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

66 files changed, 12968 insertions, 0 deletions

diff --git a/arts/examples/Makefile.am b/arts/examples/Makefile.am
new file mode 100644
index 00000000..b39302ed
--- /dev/null
+++ b/arts/examples/Makefile.am
@@ -0,0 +1,73 @@
+arts_examples_DATA = \
+README \
+example_adsr.arts \
+example_atan_saturate.arts \
+example_autopanner.arts \
+example_brickwall.arts \
+example_bus.arts \
+example_capture_wav.arts \
+example_cdelay.arts \
+example_cflanger.arts \
+example_data.arts \
+example_delay.arts \
+example_dtmf1.arts \
+example_equalizer.arts \
+example_fm.arts \
+example_freeverb.arts \
+example_moog.arts \
+example_multi_add.arts \
+example_noise.arts \
+example_pitchshift.arts \
+example_play_wave.arts \
+example_pscale.arts \
+example_pulse.arts \
+example_rc.arts \
+example_record.arts \
+example_sequence.arts \
+example_shelve_cutoff.arts \
+example_sine.arts \
+example_softsaw.arts \
+example_square.arts \
+example_stereobeep.arts \
+example_tremolo.arts \
+example_tri.arts \
+example_xfade.arts \
+instrument_full_square.arts \
+instrument_hihat.arts \
+instrument_neworgan.arts \
+instrument_nokind.arts \
+instrument_organ2.arts \
+instrument_simple_sin.arts \
+instrument_simple_square.arts \
+instrument_simple_tri.arts \
+instrument_slide.arts \
+instrument_slide1.arts \
+instrument_square.arts \
+instrument_tri.arts \
+template_Empty_Structure.arts \
+template_Instrument.arts \
+instrument_arts_all.arts-map \
+instrument_chirpdrum.arts \
+instrument_deepdrum.arts
+
+arts_examplesdir = $(arts_datadir)/artsbuilder/examples
+
+todo_DATA = \
+instrument_flexible_slide.arts \
+instrument_flexible_slide_GUI.arts \
+instrument_moog_vcf_tune.arts \
+instrument_moog_vcf_tune_GUI.arts \
+instrument_fm_horn.arts \
+effect_delay.arts \
+effect_delay_alone.arts \
+effect_flanger_alone.arts \
+mixer_element_simple.arts \
+mixer_element_eq.arts \
+mixer_element_eqfx.arts \
+template_Instrument_GUI.arts \
+template_Mixer_Element.arts
+
+tododir = $(arts_datadir)/artsbuilder/examples/todo
+
+    
+EXTRA_DIST = $(arts_examples_DATA)
diff --git a/arts/examples/README b/arts/examples/README
new file mode 100644
index 00000000..2132bfc3
--- /dev/null
+++ b/arts/examples/README
@@ -0,0 +1,256 @@
+Example Arts Modules
+--------------------
+
+This directory contains example arts modules. The examples fall into
+several categories:
+
+1. Effects which can be used as reusable building blocks (named
+   effect_*.arts)
+
+2. Standalone examples illustrating how to use each of the built-in
+   arts modules (named example_*.arts). These typically send some
+   output to a sound card.
+
+3. Instruments built from lower level arts modules (named
+   instrument_*.arts). These following a standard convention for
+   input and output ports so they can be used by a (future) instrument
+   manager.
+
+4. Mixer elements used for creating mixers, including graphical
+   controls (named mixer_element_*.arts).
+
+5. Templates for creating new modules (names template_*.arts).
+
+6. Miscellaneous modules that don't fit into any of the above
+   categories.
+
+Detailed Description Of Each Module
+-----------------------------------
+
+Examples
+--------
+
+example_stereo_beep.arts
+
+Generates a 440Hz sine wave tone in the left channel and an 880Hz sine
+wave tone in the right channel, and sends it to the sound card
+output. This is referenced in the aRts documentation.
+
+example_sine.arts
+
+Generates a 440 Hz sine wave.
+
+example_pulse.arts
+
+Generates a 440 Hz pulse wave with a 20% duty cycle.
+
+example_softsaw.arts
+
+Generates a 440 Hz sawtooth wave.
+
+example_square.arts
+
+Generates a 440 Hz square wave.
+
+example_tri.arts
+
+Generates a 440 Hz triangle wave.
+
+example_noise.arts
+
+Generates white noise.
+
+example_dtmf1.arts
+
+Generates a dual tone by producing 697 and 1209 Hz sine waves, scaling
+them by 0.5, and adding them together. This is the DTMF tone for the
+digit "1" on a telephone keypad.
+
+example_atan_saturate.arts
+
+Runs a triangle wave through the atan saturate filter.
+
+example_autopanner.arts
+
+Uses an autopanner to pan a 400 Hz sine wave between the left and
+right speakers at a 2 Hz rate.
+
+example_brickwall.arts
+
+Scales a sine wave by a factor of 5 and then runs it through a
+brickwall limiter.
+
+example_bus.arts
+
+Downlinks from a bus called "Bus" and uplinks to the bus
+"out_soundcard" with the left and right channels reversed.
+
+example_cdelay.arts
+
+Downlinks from a bus called "Delay", uplinks the right channel through
+a 0.5 second cdelay, and the left channel unchanged. You can use
+artscontrol to connect the effect to a sound player and observe the
+results.
+
+example_delay.arts
+
+This is the same as example_cdelay but used the delay effect.
+
+example_capture_wav.arts
+
+This uses the Synth_CAPTURE_WAV to save a 400 Hz sine wave as a wav
+file. Run the module for a few seconds, and then examine the file
+created in /tmp. You can play the file with a player such as kaiman.
+
+example_data.arts
+
+This uses the Data module to generate a constant stream of the value
+"3" and sends it to a Debug module to periodically display it. It
+also contains a Nil module, illustrating how it can be used to
+do nothing at all.
+
+example_adsr.arts
+
+Shows how to create a simple instrument sound using the Envelope Adsr
+module, repetitively triggered by a square wave.
+
+example_fm.arts
+
+This uses the FM Source module to generate a 440 Hz sine
+wave which is frequency modulated at a 5 Hz rate.
+
+example_freeverb.arts
+
+This connects the Freeverb effect from a bus downlink to a bus
+outlink. You can use artscontrol to connect the effect to a sound
+player and observe the results.
+
+example_flanger.arts
+
+This implements a simple flanger effect (it doesn't appear
+to work yet, though).
+
+example_moog.arts
+
+This structure combines the two channels from a bus into
+one, passes it though the Moog VCF filter, and sends
+it out the out_soundcard bus.
+
+example_pitch_shift.arts
+
+This structure passes the left channel of sound card data through the
+Pitch Shift effect. Adjust the speed parameter to vary the effect.
+
+example_rc.arts
+
+This structure passes a white noise generator though an RC filter and
+out to the sound card. By viewing the FFT Scope display in artscontrol
+you can see how this varies from an unfiltered noise waveform.
+
+example_sequence.arts
+
+This demonstrates the Sequence module by playing a sequence of notes.
+
+example_shelve_cutoff.arts
+
+This structure passes a white noise generator though a Shelve Cutoff
+filter and out to the sound card. By viewing the FFT Scope display in
+artscontrol you can see how this varies from an unfiltered noise
+waveform.
+
+example_equalizer.arts
+
+This demonstrates the Std_Equalizer module. It boosts the low and high
+frequencies by 6 dB.
+
+example_tremolo.arts
+
+This demonstrates the Tremolo effect. It modulates the left and right
+channels using a 10 Hz tremolo.
+
+example_xfade.arts
+
+This example mixes 440 and 880 Hz sine waves using a cross fader.
+Adjust the value of the cross fader's percentage input from -1 to 1 to
+control the mixing of the two signals.
+
+example_pscale.arts
+
+This illustrates the Pscale module (I'm not sure if this is a
+meaningful example).
+
+example_play_wav.arts
+
+This illustrates the Play Wave module. You will need to
+enter the full path to a .wav file as the filename
+parameter.
+
+example_multi_add.arts
+
+This shows the Multi Add module which accepts any number of inputs. It
+sums three Data modules which produce inputs of 1, 2, and 3, and
+displays the result 6.
+
+Instruments
+-----------
+
+instrument_flexible_slide.arts
+
+instrument_flexible_slide_GUI.arts
+
+instrument_fm_horn.arts
+
+instrument_full_square.arts
+
+instrument_moog_vcf_tune.arts
+
+instrument_moog_vcf_tune_GUI.arts
+
+instrument_neworgan.arts
+
+instrument_nokind.arts
+
+instrument_organ2.arts
+
+instrument_simple_sin.arts
+
+instrument_simple_square.arts
+
+instrument_simple_tri.arts
+
+instrument_slide.arts
+
+instrument_slide1.arts
+
+instrument_square.arts
+
+instrument_tri.arts
+
+Effects
+-------
+
+effect_delay.arts
+
+effect_delay_alone.arts
+
+effect_flanger_alone.arts
+
+Templates
+---------
+
+template_Empty_Structure.arts
+
+template_Instrument.arts
+
+template_Instrument_GUI.arts
+
+template_Mixer_Element.arts
+
+Mixer Elements
+--------------
+
+mixer_element_simple.arts
+
+mixer_element_eq.arts
+
+mixer_element_eqfx.arts
diff --git a/arts/examples/TODO b/arts/examples/TODO
new file mode 100644
index 00000000..cc886aff
--- /dev/null
+++ b/arts/examples/TODO
@@ -0,0 +1,2 @@
+- port the remaining aRts 0.3 examples
+- test the instruments (need more MIDI infrastructure to be implemented)
diff --git a/arts/examples/checknames.sh b/arts/examples/checknames.sh
new file mode 100755
index 00000000..8806a9fd
--- /dev/null
+++ b/arts/examples/checknames.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+echo "This script searches for improperly named .arts structures:" >&2
+
+for i in *.arts
+do
+	grep ^name=$(echo $i|sed s/.arts//g) $i >/dev/null || echo $i
+done
+
+echo "... done" >&2
diff --git a/arts/examples/effect_delay.arts b/arts/examples/effect_delay.arts
new file mode 100644
index 00000000..0dfff7fb
--- /dev/null
+++ b/arts/examples/effect_delay.arts
@@ -0,0 +1,310 @@
+name=effect_delay
+module=Synth_RC
+{
+  id=60
+  x=0
+  y=8
+  port=invalue
+  {
+    id=61
+    connect_to=100
+  }
+  port=b
+  {
+    id=62
+    connect_to=83
+  }
+  port=f
+  {
+    id=63
+    connect_to=83
+  }
+  port=outvalue
+  {
+    id=64
+    connect_to=71
+  }
+}
+module=Synth_RC
+{
+  id=65
+  x=4
+  y=8
+  port=invalue
+  {
+    id=66
+    connect_to=116
+  }
+  port=b
+  {
+    id=67
+    connect_to=84
+  }
+  port=f
+  {
+    id=68
+    connect_to=84
+  }
+  port=outvalue
+  {
+    id=69
+    connect_to=75
+  }
+}
+module=Synth_CDELAY
+{
+  id=70
+  x=1
+  y=9
+  port=invalue
+  {
+    id=71
+    connect_to=64
+  }
+  port=time
+  {
+    id=72
+    data=0.2
+  }
+  port=outvalue
+  {
+    id=73
+    connect_to=90
+  }
+}
+module=Synth_CDELAY
+{
+  id=74
+  x=5
+  y=9
+  port=invalue
+  {
+    id=75
+    connect_to=69
+  }
+  port=time
+  {
+    id=76
+    data=0.3
+  }
+  port=outvalue
+  {
+    id=77
+    connect_to=106
+  }
+}
+module=Synth_MUL
+{
+  id=89
+  x=2
+  y=11
+  port=invalue1
+  {
+    id=90
+    connect_to=73
+  }
+  port=invalue2
+  {
+    id=91
+    connect_to=82
+  }
+  port=outvalue
+  {
+    id=92
+    connect_to=115
+  }
+}
+module=Synth_ADD
+{
+  id=97
+  x=0
+  y=3
+  port=invalue
+  {
+    id=98
+    connect_to=78
+  }
+  port=addit
+  {
+    id=99
+    connect_to=108
+  }
+  port=outvalue
+  {
+    id=100
+    connect_to=80
+    connect_to=61
+  }
+}
+module=Synth_MUL
+{
+  id=105
+  x=6
+  y=11
+  port=invalue1
+  {
+    id=106
+    connect_to=77
+  }
+  port=invalue2
+  {
+    id=107
+    connect_to=82
+  }
+  port=outvalue
+  {
+    id=108
+    connect_to=99
+  }
+}
+module=Synth_ADD
+{
+  id=113
+  x=4
+  y=3
+  port=invalue
+  {
+    id=114
+    connect_to=79
+  }
+  port=addit
+  {
+    id=115
+    connect_to=92
+  }
+  port=outvalue
+  {
+    id=116
+    connect_to=66
+    connect_to=81
+  }
+}
+structureport
+{
+  name=inleft
+  x=1
+  y=1
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=78
+    connect_to=98
+  }
+}
+structureport
+{
+  name=inright
+  x=5
+  y=1
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=79
+    connect_to=114
+  }
+}
+structureport
+{
+  name=outleft
+  x=2
+  y=5
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=80
+    connect_to=100
+  }
+}
+structureport
+{
+  name=outright
+  x=6
+  y=5
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=81
+    connect_to=116
+  }
+}
+structureport
+{
+  name=level
+  x=4
+  y=9
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=82
+    connect_to=91
+    connect_to=107
+  }
+}
+structureport
+{
+  name=filter1
+  x=2
+  y=6
+  position=3
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=83
+    connect_to=63
+    connect_to=62
+  }
+}
+structureport
+{
+  name=filter2
+  x=6
+  y=6
+  position=4
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=84
+    connect_to=68
+    connect_to=67
+  }
+}
diff --git a/arts/examples/effect_delay_alone.arts b/arts/examples/effect_delay_alone.arts
new file mode 100644
index 00000000..fbc29b7e
--- /dev/null
+++ b/arts/examples/effect_delay_alone.arts
@@ -0,0 +1,310 @@
+name=effect_delay_alone
+module=Synth_RC
+{
+  id=59
+  x=0
+  y=8
+  port=invalue
+  {
+    id=60
+    connect_to=84
+  }
+  port=b
+  {
+    id=61
+    connect_to=98
+  }
+  port=f
+  {
+    id=62
+    connect_to=98
+  }
+  port=outvalue
+  {
+    id=63
+    connect_to=70
+  }
+}
+module=Synth_RC
+{
+  id=64
+  x=4
+  y=8
+  port=invalue
+  {
+    id=65
+    connect_to=92
+  }
+  port=b
+  {
+    id=66
+    connect_to=99
+  }
+  port=f
+  {
+    id=67
+    connect_to=99
+  }
+  port=outvalue
+  {
+    id=68
+    connect_to=74
+  }
+}
+module=Synth_CDELAY
+{
+  id=69
+  x=1
+  y=9
+  port=invalue
+  {
+    id=70
+    connect_to=63
+  }
+  port=time
+  {
+    id=71
+    data=0.2
+  }
+  port=outvalue
+  {
+    id=72
+    connect_to=78
+    connect_to=95
+  }
+}
+module=Synth_CDELAY
+{
+  id=73
+  x=5
+  y=9
+  port=invalue
+  {
+    id=74
+    connect_to=68
+  }
+  port=time
+  {
+    id=75
+    data=0.3
+  }
+  port=outvalue
+  {
+    id=76
+    connect_to=86
+    connect_to=96
+  }
+}
+module=Synth_MUL
+{
+  id=77
+  x=2
+  y=11
+  port=invalue1
+  {
+    id=78
+    connect_to=72
+  }
+  port=invalue2
+  {
+    id=79
+    connect_to=97
+  }
+  port=outvalue
+  {
+    id=80
+    connect_to=91
+  }
+}
+module=Synth_ADD
+{
+  id=81
+  x=0
+  y=3
+  port=invalue
+  {
+    id=82
+    connect_to=93
+  }
+  port=addit
+  {
+    id=83
+    connect_to=88
+  }
+  port=outvalue
+  {
+    id=84
+    connect_to=60
+  }
+}
+module=Synth_MUL
+{
+  id=85
+  x=6
+  y=11
+  port=invalue1
+  {
+    id=86
+    connect_to=76
+  }
+  port=invalue2
+  {
+    id=87
+    connect_to=97
+  }
+  port=outvalue
+  {
+    id=88
+    connect_to=83
+  }
+}
+module=Synth_ADD
+{
+  id=89
+  x=4
+  y=3
+  port=invalue
+  {
+    id=90
+    connect_to=94
+  }
+  port=addit
+  {
+    id=91
+    connect_to=80
+  }
+  port=outvalue
+  {
+    id=92
+    connect_to=65
+  }
+}
+structureport
+{
+  name=inleft
+  x=1
+  y=1
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=93
+    connect_to=82
+  }
+}
+structureport
+{
+  name=inright
+  x=5
+  y=1
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=94
+    connect_to=90
+  }
+}
+structureport
+{
+  name=outleft
+  x=1
+  y=11
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=95
+    connect_to=72
+  }
+}
+structureport
+{
+  name=outright
+  x=9
+  y=11
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=96
+    connect_to=76
+  }
+}
+structureport
+{
+  name=level
+  x=4
+  y=9
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=97
+    connect_to=79
+    connect_to=87
+  }
+}
+structureport
+{
+  name=filter1
+  x=2
+  y=6
+  position=3
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=98
+    connect_to=61
+    connect_to=62
+  }
+}
+structureport
+{
+  name=filter2
+  x=6
+  y=6
+  position=4
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=99
+    connect_to=66
+    connect_to=67
+  }
+}
diff --git a/arts/examples/effect_flanger_alone.arts b/arts/examples/effect_flanger_alone.arts
new file mode 100644
index 00000000..c3dc1a63
--- /dev/null
+++ b/arts/examples/effect_flanger_alone.arts
@@ -0,0 +1,285 @@
+name=effect_flanger_alone
+module=Synth_FX_CFLANGER
+{
+  id=0
+  x=0
+  y=7
+  port=invalue
+  {
+    id=1
+    connect_to=18
+  }
+  port=lfo
+  {
+    id=2
+    connect_to=17
+  }
+  port=mintime
+  {
+    id=3
+    connect_to=23
+  }
+  port=maxtime
+  {
+    id=4
+    connect_to=24
+  }
+  port=outvalue
+  {
+    id=5
+    connect_to=30
+  }
+}
+module=Synth_FX_CFLANGER
+{
+  id=6
+  x=6
+  y=7
+  port=invalue
+  {
+    id=7
+    connect_to=19
+  }
+  port=lfo
+  {
+    id=8
+    connect_to=17
+  }
+  port=mintime
+  {
+    id=9
+    connect_to=23
+  }
+  port=maxtime
+  {
+    id=10
+    connect_to=24
+  }
+  port=outvalue
+  {
+    id=11
+    connect_to=39
+  }
+}
+module=Synth_FREQUENCY
+{
+  id=12
+  x=5
+  y=3
+  port=frequency
+  {
+    id=13
+    connect_to=22
+  }
+  port=pos
+  {
+    id=14
+    connect_to=16
+  }
+}
+module=Synth_WAVE_SIN
+{
+  id=15
+  x=6
+  y=4
+  port=pos
+  {
+    id=16
+    connect_to=14
+  }
+  port=outvalue
+  {
+    id=17
+    connect_to=2
+    connect_to=8
+  }
+}
+module=Synth_MUL
+{
+  id=29
+  x=2
+  y=9
+  port=invalue1
+  {
+    id=30
+    connect_to=5
+  }
+  port=invalue2
+  {
+    id=31
+    connect_to=41
+  }
+  port=outvalue
+  {
+    id=32
+    connect_to=20
+  }
+}
+module=Synth_MUL
+{
+  id=37
+  x=5
+  y=9
+  port=invalue1
+  {
+    id=38
+    connect_to=41
+  }
+  port=invalue2
+  {
+    id=39
+    connect_to=11
+  }
+  port=outvalue
+  {
+    id=40
+    connect_to=21
+  }
+}
+structureport
+{
+  name=inleft
+  x=1
+  y=6
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=18
+    connect_to=1
+  }
+}
+structureport
+{
+  name=inright
+  x=7
+  y=6
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=19
+    connect_to=7
+  }
+}
+structureport
+{
+  name=outleft
+  x=4
+  y=10
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=20
+    connect_to=32
+  }
+}
+structureport
+{
+  name=outright
+  x=7
+  y=10
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=21
+    connect_to=40
+  }
+}
+structureport
+{
+  name=frequency
+  x=6
+  y=2
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=22
+    connect_to=13
+  }
+}
+structureport
+{
+  name=mintime
+  x=6
+  y=0
+  position=3
+  type
+  {
+    direction=output
+    datatype=string
+    conntype=property
+  }
+  data
+  {
+    id=23
+    connect_to=3
+    connect_to=9
+  }
+}
+structureport
+{
+  name=maxtime
+  x=7
+  y=0
+  position=4
+  type
+  {
+    direction=output
+    datatype=string
+    conntype=property
+  }
+  data
+  {
+    id=24
+    connect_to=4
+    connect_to=10
+  }
+}
+structureport
+{
+  name=level
+  x=6
+  y=8
+  position=5
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=41
+    connect_to=38
+    connect_to=31
+  }
+}
diff --git a/arts/examples/example_adsr.arts b/arts/examples/example_adsr.arts
new file mode 100644
index 00000000..b6a2cdff
--- /dev/null
+++ b/arts/examples/example_adsr.arts
@@ -0,0 +1,137 @@
+name=example_adsr
+module=Arts::Synth_AMAN_PLAY
+{
+  id=0
+  x=1
+  y=7
+  port=title
+  {
+    id=1
+    string_data=Adsr
+  }
+  port=autoRestoreID
+  {
+    id=2
+    string_data=Demo2
+  }
+  port=left
+  {
+    id=3
+    connect_to=21
+  }
+  port=right
+  {
+    id=4
+    connect_to=21
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=5
+  x=5
+  y=3
+  port=pos
+  {
+    id=6
+    connect_to=10
+  }
+  port=outvalue
+  {
+    id=7
+    connect_to=16
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=8
+  x=5
+  y=1
+  port=frequency
+  {
+    id=9
+    audio_data=440.00000
+  }
+  port=pos
+  {
+    id=10
+    connect_to=6
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=11
+  x=1
+  y=1
+  port=frequency
+  {
+    id=12
+    audio_data=1.00000
+  }
+  port=pos
+  {
+    id=13
+    connect_to=24
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=14
+  x=2
+  y=5
+  port=active
+  {
+    id=15
+    connect_to=25
+  }
+  port=invalue
+  {
+    id=16
+    connect_to=7
+  }
+  port=attack
+  {
+    id=17
+    audio_data=0.10000
+  }
+  port=decay
+  {
+    id=18
+    audio_data=0.10000
+  }
+  port=sustain
+  {
+    id=19
+    audio_data=0.50000
+  }
+  port=release
+  {
+    id=20
+    audio_data=0.10000
+  }
+  port=outvalue
+  {
+    id=21
+    connect_to=3
+    connect_to=4
+  }
+  port=done
+  {
+    id=22
+  }
+}
+module=Arts::Synth_WAVE_SQUARE
+{
+  id=23
+  x=1
+  y=3
+  port=pos
+  {
+    id=24
+    connect_to=13
+  }
+  port=outvalue
+  {
+    id=25
+    connect_to=15
+  }
+}
diff --git a/arts/examples/example_atan_saturate.arts b/arts/examples/example_atan_saturate.arts
new file mode 100644
index 00000000..c693b38b
--- /dev/null
+++ b/arts/examples/example_atan_saturate.arts
@@ -0,0 +1,81 @@
+name=example_atan_saturate
+module=Arts::Synth_FREQUENCY
+{
+  id=76
+  x=1
+  y=1
+  port=frequency
+  {
+    id=77
+    audio_data=440.00000
+  }
+  port=pos
+  {
+    id=78
+    connect_to=89
+  }
+}
+module=Arts::Synth_AMAN_PLAY
+{
+  id=79
+  x=1
+  y=7
+  port=title
+  {
+    id=80
+    string_data=Atan Saturate
+  }
+  port=autoRestoreID
+  {
+    id=81
+    string_data=Atan Saturate
+  }
+  port=left
+  {
+    id=82
+    connect_to=87
+  }
+  port=right
+  {
+    id=83
+    connect_to=87
+  }
+}
+module=Arts::Synth_ATAN_SATURATE
+{
+  id=84
+  x=2
+  y=5
+  port=inscale
+  {
+    id=85
+    audio_data=1.00000
+  }
+  port=invalue
+  {
+    id=86
+    connect_to=90
+  }
+  port=outvalue
+  {
+    id=87
+    connect_to=82
+    connect_to=83
+  }
+}
+module=Arts::Synth_WAVE_TRI
+{
+  id=88
+  x=2
+  y=3
+  port=pos
+  {
+    id=89
+    connect_to=78
+  }
+  port=outvalue
+  {
+    id=90
+    connect_to=86
+  }
+}
diff --git a/arts/examples/example_autopanner.arts b/arts/examples/example_autopanner.arts
new file mode 100644
index 00000000..0a11a2e7
--- /dev/null
+++ b/arts/examples/example_autopanner.arts
@@ -0,0 +1,117 @@
+name=example_autopanner
+module=Arts::Synth_FREQUENCY
+{
+  id=0
+  x=1
+  y=1
+  port=frequency
+  {
+    id=1
+    audio_data=440.00000
+  }
+  port=pos
+  {
+    id=2
+    connect_to=4
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=3
+  x=1
+  y=3
+  port=pos
+  {
+    id=4
+    connect_to=2
+  }
+  port=outvalue
+  {
+    id=5
+    connect_to=12
+  }
+}
+module=Arts::Synth_AMAN_PLAY
+{
+  id=6
+  x=1
+  y=7
+  port=title
+  {
+    id=7
+    string_data=Autopanner
+  }
+  port=autoRestoreID
+  {
+    id=8
+    string_data=Autopanner
+  }
+  port=left
+  {
+    id=9
+    connect_to=14
+  }
+  port=right
+  {
+    id=10
+    connect_to=15
+  }
+}
+module=Arts::Synth_AUTOPANNER
+{
+  id=11
+  x=2
+  y=5
+  port=invalue
+  {
+    id=12
+    connect_to=5
+  }
+  port=inlfo
+  {
+    id=13
+    connect_to=18
+  }
+  port=outvalue1
+  {
+    id=14
+    connect_to=9
+  }
+  port=outvalue2
+  {
+    id=15
+    connect_to=10
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=16
+  x=5
+  y=3
+  port=pos
+  {
+    id=17
+    connect_to=21
+  }
+  port=outvalue
+  {
+    id=18
+    connect_to=13
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=19
+  x=5
+  y=1
+  port=frequency
+  {
+    id=20
+    audio_data=2.00000
+  }
+  port=pos
+  {
+    id=21
+    connect_to=17
+  }
+}
diff --git a/arts/examples/example_brickwall.arts b/arts/examples/example_brickwall.arts
new file mode 100644
index 00000000..546620e1
--- /dev/null
+++ b/arts/examples/example_brickwall.arts
@@ -0,0 +1,98 @@
+name=example_brickwall
+module=Arts::Synth_FREQUENCY
+{
+  id=0
+  x=1
+  y=1
+  port=frequency
+  {
+    id=1
+    audio_data=440.00000
+  }
+  port=pos
+  {
+    id=2
+    connect_to=13
+    connect_to=25
+  }
+}
+module=Arts::Synth_AMAN_PLAY
+{
+  id=3
+  x=1
+  y=9
+  port=title
+  {
+    id=4
+    string_data=Brickwall
+  }
+  port=autoRestoreID
+  {
+    id=5
+    string_data=Brickwall
+  }
+  port=left
+  {
+    id=6
+    connect_to=20
+  }
+  port=right
+  {
+    id=7
+    connect_to=20
+  }
+}
+module=Arts::Synth_BRICKWALL_LIMITER
+{
+  id=18
+  x=2
+  y=7
+  port=invalue
+  {
+    id=19
+    connect_to=34
+  }
+  port=outvalue
+  {
+    id=20
+    connect_to=6
+    connect_to=7
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=24
+  x=1
+  y=3
+  port=pos
+  {
+    id=25
+    connect_to=2
+  }
+  port=outvalue
+  {
+    id=26
+    connect_to=33
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=31
+  x=1
+  y=5
+  port=invalue1
+  {
+    id=32
+    audio_data=5.00000
+  }
+  port=invalue2
+  {
+    id=33
+    connect_to=26
+  }
+  port=outvalue
+  {
+    id=34
+    connect_to=19
+  }
+}
diff --git a/arts/examples/example_bus.arts b/arts/examples/example_bus.arts
new file mode 100644
index 00000000..2a43e84a
--- /dev/null
+++ b/arts/examples/example_bus.arts
@@ -0,0 +1,44 @@
+name=example_bus
+module=Arts::Synth_BUS_DOWNLINK
+{
+  id=0
+  x=1
+  y=1
+  port=busname
+  {
+    id=1
+    string_data=Bus
+  }
+  port=left
+  {
+    id=2
+    connect_to=7
+  }
+  port=right
+  {
+    id=3
+    connect_to=10
+    connect_to=6
+  }
+}
+module=Arts::Synth_BUS_UPLINK
+{
+  id=4
+  x=1
+  y=4
+  port=busname
+  {
+    id=5
+    string_data=out_soundcard
+  }
+  port=left
+  {
+    id=6
+    connect_to=3
+  }
+  port=right
+  {
+    id=7
+    connect_to=2
+  }
+}
diff --git a/arts/examples/example_capture_wav.arts b/arts/examples/example_capture_wav.arts
new file mode 100644
index 00000000..0638e64a
--- /dev/null
+++ b/arts/examples/example_capture_wav.arts
@@ -0,0 +1,50 @@
+name=example_capture_wav
+module=Arts::Synth_CAPTURE_WAV
+{
+  id=3
+  x=1
+  y=5
+  port=left
+  {
+    id=4
+    connect_to=11
+  }
+  port=right
+  {
+    id=5
+    connect_to=11
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=9
+  x=1
+  y=3
+  port=pos
+  {
+    id=10
+    connect_to=17
+  }
+  port=outvalue
+  {
+    id=11
+    connect_to=4
+    connect_to=5
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=15
+  x=1
+  y=1
+  port=frequency
+  {
+    id=16
+    audio_data=440.00000
+  }
+  port=pos
+  {
+    id=17
+    connect_to=10
+  }
+}
diff --git a/arts/examples/example_cdelay.arts b/arts/examples/example_cdelay.arts
new file mode 100644
index 00000000..211834b6
--- /dev/null
+++ b/arts/examples/example_cdelay.arts
@@ -0,0 +1,64 @@
+name=example_cdelay
+module=Arts::Synth_BUS_DOWNLINK
+{
+  id=0
+  x=1
+  y=1
+  port=busname
+  {
+    id=1
+    string_data=Delay
+  }
+  port=left
+  {
+    id=2
+    connect_to=6
+  }
+  port=right
+  {
+    id=3
+    connect_to=10
+  }
+}
+module=Arts::Synth_BUS_UPLINK
+{
+  id=4
+  x=1
+  y=5
+  port=busname
+  {
+    id=5
+    string_data=out_soundcard
+  }
+  port=left
+  {
+    id=6
+    connect_to=2
+  }
+  port=right
+  {
+    id=7
+    connect_to=11
+  }
+}
+module=Arts::Synth_CDELAY
+{
+  id=8
+  x=4
+  y=3
+  port=time
+  {
+    id=9
+    audio_data=0.50000
+  }
+  port=invalue
+  {
+    id=10
+    connect_to=3
+  }
+  port=outvalue
+  {
+    id=11
+    connect_to=7
+  }
+}
diff --git a/arts/examples/example_cflanger.arts b/arts/examples/example_cflanger.arts
new file mode 100644
index 00000000..7f8c2258
--- /dev/null
+++ b/arts/examples/example_cflanger.arts
@@ -0,0 +1,127 @@
+name=example_cflanger
+module=Arts::Synth_FX_CFLANGER
+{
+  id=11
+  x=1
+  y=5
+  port=mintime
+  {
+    id=12
+    audio_data=0.00100
+  }
+  port=maxtime
+  {
+    id=13
+    audio_data=0.00500
+  }
+  port=invalue
+  {
+    id=14
+    connect_to=29
+  }
+  port=lfo
+  {
+    id=15
+    connect_to=19
+  }
+  port=outvalue
+  {
+    id=16
+    connect_to=36
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=17
+  x=8
+  y=3
+  port=pos
+  {
+    id=18
+    connect_to=22
+  }
+  port=outvalue
+  {
+    id=19
+    connect_to=15
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=20
+  x=8
+  y=1
+  port=frequency
+  {
+    id=21
+    audio_data=1.00000
+  }
+  port=pos
+  {
+    id=22
+    connect_to=18
+  }
+}
+module=Arts::Synth_BUS_DOWNLINK
+{
+  id=27
+  x=1
+  y=1
+  port=busname
+  {
+    id=28
+    string_data=Flanger
+  }
+  port=left
+  {
+    id=29
+    connect_to=14
+    connect_to=37
+  }
+  port=right
+  {
+    id=30
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=35
+  x=5
+  y=7
+  port=invalue1
+  {
+    id=36
+    connect_to=16
+  }
+  port=invalue2
+  {
+    id=37
+    connect_to=29
+  }
+  port=outvalue
+  {
+    id=38
+    connect_to=9
+    connect_to=45
+  }
+}
+module=Arts::Synth_BUS_UPLINK
+{
+  id=43
+  x=1
+  y=9
+  port=busname
+  {
+    id=44
+    string_data=out_soundcard
+  }
+  port=left
+  {
+    id=45
+    connect_to=38
+  }
+  port=right
+  {
+    id=46
+  }
+}
diff --git a/arts/examples/example_data.arts b/arts/examples/example_data.arts
new file mode 100644
index 00000000..135c7778
--- /dev/null
+++ b/arts/examples/example_data.arts
@@ -0,0 +1,39 @@
+name=example_data
+module=Arts::Synth_DATA
+{
+  id=3
+  x=1
+  y=1
+  port=value
+  {
+    id=4
+    audio_data=3.00000
+  }
+  port=outvalue
+  {
+    id=5
+    connect_to=11
+  }
+}
+module=Arts::Synth_DEBUG
+{
+  id=9
+  x=1
+  y=3
+  port=comment
+  {
+    id=10
+    string_data=Data:
+  }
+  port=invalue
+  {
+    id=11
+    connect_to=5
+  }
+}
+module=Arts::Synth_NIL
+{
+  id=13
+  x=5
+  y=1
+}
diff --git a/arts/examples/example_delay.arts b/arts/examples/example_delay.arts
new file mode 100644
index 00000000..c7339a5c
--- /dev/null
+++ b/arts/examples/example_delay.arts
@@ -0,0 +1,65 @@
+name=example_delay
+module=Arts::Synth_BUS_DOWNLINK
+{
+  id=0
+  x=1
+  y=1
+  port=busname
+  {
+    id=1
+    string_data=Delay
+  }
+  port=left
+  {
+    id=2
+    connect_to=6
+  }
+  port=right
+  {
+    id=3
+    connect_to=10
+    connect_to=17
+  }
+}
+module=Arts::Synth_BUS_UPLINK
+{
+  id=4
+  x=1
+  y=5
+  port=busname
+  {
+    id=5
+    string_data=out_soundcard
+  }
+  port=left
+  {
+    id=6
+    connect_to=2
+  }
+  port=right
+  {
+    id=7
+    connect_to=19
+  }
+}
+module=Arts::Synth_DELAY
+{
+  id=16
+  x=4
+  y=3
+  port=invalue
+  {
+    id=17
+    connect_to=3
+  }
+  port=time
+  {
+    id=18
+    audio_data=0.50000
+  }
+  port=outvalue
+  {
+    id=19
+    connect_to=7
+  }
+}
diff --git a/arts/examples/example_dtmf1.arts b/arts/examples/example_dtmf1.arts
new file mode 100644
index 00000000..8adcb628
--- /dev/null
+++ b/arts/examples/example_dtmf1.arts
@@ -0,0 +1,155 @@
+name=example_dtmf1
+module=Arts::Synth_AMAN_PLAY
+{
+  id=0
+  x=2
+  y=8
+  port=title
+  {
+    id=1
+    string_data=Dtmf1
+  }
+  port=autoRestoreID
+  {
+    id=2
+    string_data=Dtmf1
+  }
+  port=left
+  {
+    id=3
+    connect_to=14
+  }
+  port=right
+  {
+    id=4
+    connect_to=14
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=5
+  x=1
+  y=2
+  port=pos
+  {
+    id=6
+    connect_to=10
+  }
+  port=outvalue
+  {
+    id=7
+    connect_to=23
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=8
+  x=1
+  y=0
+  port=frequency
+  {
+    id=9
+    audio_data=697.00000
+  }
+  port=pos
+  {
+    id=10
+    connect_to=6
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=11
+  x=3
+  y=6
+  port=invalue1
+  {
+    id=12
+    connect_to=24
+  }
+  port=invalue2
+  {
+    id=13
+    connect_to=28
+  }
+  port=outvalue
+  {
+    id=14
+    connect_to=3
+    connect_to=4
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=15
+  x=5
+  y=2
+  port=pos
+  {
+    id=16
+    connect_to=20
+  }
+  port=outvalue
+  {
+    id=17
+    connect_to=27
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=18
+  x=5
+  y=0
+  port=frequency
+  {
+    id=19
+    audio_data=1209.00000
+  }
+  port=pos
+  {
+    id=20
+    connect_to=16
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=21
+  x=1
+  y=4
+  port=invalue1
+  {
+    id=22
+    audio_data=0.50000
+  }
+  port=invalue2
+  {
+    id=23
+    connect_to=7
+  }
+  port=outvalue
+  {
+    id=24
+    connect_to=12
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=25
+  x=5
+  y=4
+  port=invalue1
+  {
+    id=26
+    audio_data=0.50000
+  }
+  port=invalue2
+  {
+    id=27
+    connect_to=17
+  }
+  port=outvalue
+  {
+    id=28
+    connect_to=13
+  }
+}
diff --git a/arts/examples/example_equalizer.arts b/arts/examples/example_equalizer.arts
new file mode 100644
index 00000000..fe89cea8
--- /dev/null
+++ b/arts/examples/example_equalizer.arts
@@ -0,0 +1,84 @@
+name=example_equalizer
+module=Arts::Synth_BUS_DOWNLINK
+{
+  id=0
+  x=1
+  y=1
+  port=busname
+  {
+    id=1
+    string_data=Equalizer
+  }
+  port=left
+  {
+    id=2
+    connect_to=14
+  }
+  port=right
+  {
+    id=3
+  }
+}
+module=Arts::Synth_BUS_UPLINK
+{
+  id=4
+  x=1
+  y=5
+  port=busname
+  {
+    id=5
+    string_data=out_soundcard
+  }
+  port=left
+  {
+    id=6
+    connect_to=15
+  }
+  port=right
+  {
+    id=7
+    connect_to=15
+  }
+}
+module=Arts::Synth_STD_EQUALIZER
+{
+  id=8
+  x=1
+  y=3
+  port=low
+  {
+    id=9
+    audio_data=6.00000
+  }
+  port=mid
+  {
+    id=10
+    audio_data=0.00000
+  }
+  port=high
+  {
+    id=11
+    audio_data=6.00000
+  }
+  port=frequency
+  {
+    id=12
+    audio_data=1000.00000
+  }
+  port=q
+  {
+    id=13
+    audio_data=1.00000
+  }
+  port=invalue
+  {
+    id=14
+    connect_to=2
+  }
+  port=outvalue
+  {
+    id=15
+    connect_to=6
+    connect_to=7
+  }
+}
diff --git a/arts/examples/example_fm.arts b/arts/examples/example_fm.arts
new file mode 100644
index 00000000..242519c0
--- /dev/null
+++ b/arts/examples/example_fm.arts
@@ -0,0 +1,102 @@
+name=example_fm
+module=Arts::Synth_AMAN_PLAY
+{
+  id=36
+  x=1
+  y=9
+  port=title
+  {
+    id=37
+    string_data=Demo1
+  }
+  port=autoRestoreID
+  {
+    id=38
+    string_data=Demo2
+  }
+  port=left
+  {
+    id=39
+    connect_to=43
+  }
+  port=right
+  {
+    id=40
+    connect_to=43
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=41
+  x=2
+  y=7
+  port=pos
+  {
+    id=42
+    connect_to=54
+  }
+  port=outvalue
+  {
+    id=43
+    connect_to=39
+    connect_to=40
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=44
+  x=1
+  y=3
+  port=pos
+  {
+    id=45
+    connect_to=49
+  }
+  port=outvalue
+  {
+    id=46
+    connect_to=52
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=47
+  x=1
+  y=1
+  port=frequency
+  {
+    id=48
+    audio_data=5.00000
+  }
+  port=pos
+  {
+    id=49
+    connect_to=45
+  }
+}
+module=Arts::Synth_FM_SOURCE
+{
+  id=50
+  x=1
+  y=5
+  port=frequency
+  {
+    id=51
+    audio_data=440.00000
+  }
+  port=modulator
+  {
+    id=52
+    connect_to=46
+  }
+  port=modlevel
+  {
+    id=53
+    audio_data=0.90000
+  }
+  port=pos
+  {
+    id=54
+    connect_to=42
+  }
+}
diff --git a/arts/examples/example_freeverb.arts b/arts/examples/example_freeverb.arts
new file mode 100644
index 00000000..b8d3a321
--- /dev/null
+++ b/arts/examples/example_freeverb.arts
@@ -0,0 +1,99 @@
+name=example_freeverb
+module=Arts::Synth_FREEVERB
+{
+  id=0
+  x=1
+  y=3
+  port=inleft
+  {
+    id=1
+    connect_to=13
+  }
+  port=inright
+  {
+    id=2
+    connect_to=14
+  }
+  port=outleft
+  {
+    id=3
+    connect_to=17
+  }
+  port=outright
+  {
+    id=4
+    connect_to=18
+  }
+  port=roomsize
+  {
+    id=5
+    audio_data=1.00000
+  }
+  port=damp
+  {
+    id=6
+    audio_data=0.20000
+  }
+  port=wet
+  {
+    id=7
+    audio_data=0.20000
+  }
+  port=dry
+  {
+    id=8
+    audio_data=0.20000
+  }
+  port=width
+  {
+    id=9
+    audio_data=1.00000
+  }
+  port=mode
+  {
+    id=10
+    audio_data=0.00000
+  }
+}
+module=Arts::Synth_BUS_DOWNLINK
+{
+  id=11
+  x=1
+  y=1
+  port=busname
+  {
+    id=12
+    string_data=Freeverb
+  }
+  port=left
+  {
+    id=13
+    connect_to=1
+  }
+  port=right
+  {
+    id=14
+    connect_to=2
+  }
+}
+module=Arts::Synth_BUS_UPLINK
+{
+  id=15
+  x=1
+  y=5
+  port=busname
+  {
+    id=16
+    string_data=out_soundcard
+  }
+  port=left
+  {
+    id=17
+    connect_to=3
+  }
+  port=right
+  {
+    id=18
+    connect_to=4
+  }
+}
diff --git a/arts/examples/example_moog.arts b/arts/examples/example_moog.arts
new file mode 100644
index 00000000..3a6a0586
--- /dev/null
+++ b/arts/examples/example_moog.arts
@@ -0,0 +1,96 @@
+name=example_moog
+module=Arts::Synth_MOOG_VCF
+{
+  id=17
+  x=3
+  y=4
+  port=frequency
+  {
+    id=18
+    audio_data=2000.00000
+  }
+  port=resonance
+  {
+    id=19
+    audio_data=3.00000
+  }
+  port=invalue
+  {
+    id=20
+    connect_to=47
+  }
+  port=outvalue
+  {
+    id=21
+    connect_to=36
+    connect_to=37
+  }
+}
+module=Arts::Synth_BUS_DOWNLINK
+{
+  id=26
+  x=3
+  y=0
+  port=busname
+  {
+    id=27
+    string_data=Moog VCF
+  }
+  port=left
+  {
+    id=28
+    connect_to=44
+  }
+  port=right
+  {
+    id=29
+    connect_to=45
+  }
+}
+module=Arts::Synth_BUS_UPLINK
+{
+  id=34
+  x=3
+  y=6
+  port=busname
+  {
+    id=35
+    string_data=out_soundcard
+  }
+  port=left
+  {
+    id=36
+    connect_to=21
+  }
+  port=right
+  {
+    id=37
+    connect_to=21
+  }
+}
+module=Arts::Synth_XFADE
+{
+  id=43
+  x=3
+  y=2
+  port=invalue1
+  {
+    id=44
+    connect_to=28
+  }
+  port=invalue2
+  {
+    id=45
+    connect_to=29
+  }
+  port=percentage
+  {
+    id=46
+    audio_data=0.00000
+  }
+  port=outvalue
+  {
+    id=47
+    connect_to=20
+  }
+}
diff --git a/arts/examples/example_multi_add.arts b/arts/examples/example_multi_add.arts
new file mode 100644
index 00000000..229033bc
--- /dev/null
+++ b/arts/examples/example_multi_add.arts
@@ -0,0 +1,83 @@
+name=example_multi_add
+module=Arts::Synth_MULTI_ADD
+{
+  id=3
+  x=2
+  y=3
+  port=invalue
+  {
+    id=4
+    connect_to=11
+    connect_to=17
+    connect_to=23
+  }
+  port=outvalue
+  {
+    id=5
+    connect_to=29
+  }
+}
+module=Arts::Synth_DATA
+{
+  id=9
+  x=1
+  y=1
+  port=value
+  {
+    id=10
+    audio_data=1.00000
+  }
+  port=outvalue
+  {
+    id=11
+    connect_to=4
+  }
+}
+module=Arts::Synth_DATA
+{
+  id=15
+  x=5
+  y=1
+  port=value
+  {
+    id=16
+    audio_data=2.00000
+  }
+  port=outvalue
+  {
+    id=17
+    connect_to=4
+  }
+}
+module=Arts::Synth_DATA
+{
+  id=21
+  x=9
+  y=1
+  port=value
+  {
+    id=22
+    audio_data=3.00000
+  }
+  port=outvalue
+  {
+    id=23
+    connect_to=4
+  }
+}
+module=Arts::Synth_DEBUG
+{
+  id=27
+  x=1
+  y=5
+  port=comment
+  {
+    id=28
+    string_data=Result
+  }
+  port=invalue
+  {
+    id=29
+    connect_to=5
+  }
+}
diff --git a/arts/examples/example_noise.arts b/arts/examples/example_noise.arts
new file mode 100644
index 00000000..60f6e2e3
--- /dev/null
+++ b/arts/examples/example_noise.arts
@@ -0,0 +1,39 @@
+name=example_noise
+module=Arts::Synth_AMAN_PLAY
+{
+  id=3
+  x=1
+  y=3
+  port=title
+  {
+    id=4
+    string_data=Noise
+  }
+  port=autoRestoreID
+  {
+    id=5
+    string_data=Noise
+  }
+  port=left
+  {
+    id=6
+    connect_to=15
+  }
+  port=right
+  {
+    id=7
+    connect_to=15
+  }
+}
+module=Arts::Synth_NOISE
+{
+  id=14
+  x=1
+  y=1
+  port=outvalue
+  {
+    id=15
+    connect_to=6
+    connect_to=7
+  }
+}
diff --git a/arts/examples/example_pitchshift.arts b/arts/examples/example_pitchshift.arts
new file mode 100644
index 00000000..5126e54b
--- /dev/null
+++ b/arts/examples/example_pitchshift.arts
@@ -0,0 +1,69 @@
+name=example_pitchshift
+module=Arts::Synth_BUS_DOWNLINK
+{
+  id=23
+  x=1
+  y=1
+  port=busname
+  {
+    id=24
+    string_data=Pitch Shift
+  }
+  port=left
+  {
+    id=25
+    connect_to=34
+  }
+  port=right
+  {
+    id=26
+  }
+}
+module=Arts::Synth_BUS_UPLINK
+{
+  id=27
+  x=1
+  y=5
+  port=busname
+  {
+    id=28
+    string_data=out_soundcard
+  }
+  port=left
+  {
+    id=29
+    connect_to=35
+  }
+  port=right
+  {
+    id=30
+    connect_to=35
+  }
+}
+module=Arts::Synth_PITCH_SHIFT
+{
+  id=31
+  x=1
+  y=3
+  port=speed
+  {
+    id=32
+    audio_data=0.75000
+  }
+  port=frequency
+  {
+    id=33
+    audio_data=10.00000
+  }
+  port=invalue
+  {
+    id=34
+    connect_to=25
+  }
+  port=outvalue
+  {
+    id=35
+    connect_to=29
+    connect_to=30
+  }
+}
diff --git a/arts/examples/example_play_wave.arts b/arts/examples/example_play_wave.arts
new file mode 100644
index 00000000..7a85423d
--- /dev/null
+++ b/arts/examples/example_play_wave.arts
@@ -0,0 +1,57 @@
+name=example_play_wave
+module=Arts::Synth_PLAY_WAV
+{
+  id=6
+  x=1
+  y=1
+  port=speed
+  {
+    id=7
+    audio_data=44100.00000
+  }
+  port=filename
+  {
+    id=8
+    string_data=/home/tranter/test.wav
+  }
+  port=finished
+  {
+    id=9
+  }
+  port=left
+  {
+    id=10
+    connect_to=20
+  }
+  port=right
+  {
+    id=11
+    connect_to=21
+  }
+}
+module=Arts::Synth_AMAN_PLAY
+{
+  id=17
+  x=1
+  y=3
+  port=title
+  {
+    id=18
+    string_data=Wave
+  }
+  port=autoRestoreID
+  {
+    id=19
+    string_data=Wave
+  }
+  port=left
+  {
+    id=20
+    connect_to=10
+  }
+  port=right
+  {
+    id=21
+    connect_to=11
+  }
+}
diff --git a/arts/examples/example_pscale.arts b/arts/examples/example_pscale.arts
new file mode 100644
index 00000000..6f364135
--- /dev/null
+++ b/arts/examples/example_pscale.arts
@@ -0,0 +1,112 @@
+name=example_pscale
+module=Arts::Synth_SEQUENCE
+{
+  id=10
+  x=1
+  y=1
+  port=speed
+  {
+    id=11
+    audio_data=0.50000
+  }
+  port=seq
+  {
+    id=12
+    string_data=C-4;D-4;E-4;F-4;G-4;A-4;B-4;C-5;
+  }
+  port=frequency
+  {
+    id=13
+    connect_to=21
+  }
+  port=pos
+  {
+    id=14
+    connect_to=34
+  }
+}
+module=Arts::Synth_AMAN_PLAY
+{
+  id=15
+  x=1
+  y=8
+  port=title
+  {
+    id=16
+    string_data=Pscale
+  }
+  port=autoRestoreID
+  {
+    id=17
+    string_data=Pscale
+  }
+  port=left
+  {
+    id=18
+    connect_to=35
+  }
+  port=right
+  {
+    id=19
+    connect_to=35
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=20
+  x=1
+  y=3
+  port=frequency
+  {
+    id=21
+    connect_to=13
+  }
+  port=pos
+  {
+    id=22
+    connect_to=24
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=23
+  x=1
+  y=5
+  port=pos
+  {
+    id=24
+    connect_to=22
+  }
+  port=outvalue
+  {
+    id=25
+    connect_to=33
+  }
+}
+module=Arts::Synth_PSCALE
+{
+  id=31
+  x=5
+  y=6
+  port=top
+  {
+    id=32
+    audio_data=0.50000
+  }
+  port=invalue
+  {
+    id=33
+    connect_to=25
+  }
+  port=pos
+  {
+    id=34
+    connect_to=14
+  }
+  port=outvalue
+  {
+    id=35
+    connect_to=18
+    connect_to=19
+  }
+}
diff --git a/arts/examples/example_pulse.arts b/arts/examples/example_pulse.arts
new file mode 100644
index 00000000..7da74675
--- /dev/null
+++ b/arts/examples/example_pulse.arts
@@ -0,0 +1,66 @@
+name=example_pulse
+module=Arts::Synth_FREQUENCY
+{
+  id=0
+  x=1
+  y=1
+  port=frequency
+  {
+    id=1
+    audio_data=440.00000
+  }
+  port=pos
+  {
+    id=2
+    connect_to=7
+    connect_to=23
+  }
+}
+module=Arts::Synth_AMAN_PLAY
+{
+  id=12
+  x=1
+  y=5
+  port=title
+  {
+    id=13
+    string_data=Pulse
+  }
+  port=autoRestoreID
+  {
+    id=14
+    string_data=Pulse
+  }
+  port=left
+  {
+    id=15
+    connect_to=24
+  }
+  port=right
+  {
+    id=16
+    connect_to=24
+  }
+}
+module=Arts::Synth_WAVE_PULSE
+{
+  id=21
+  x=2
+  y=3
+  port=dutycycle
+  {
+    id=22
+    audio_data=0.20000
+  }
+  port=pos
+  {
+    id=23
+    connect_to=2
+  }
+  port=outvalue
+  {
+    id=24
+    connect_to=15
+    connect_to=16
+  }
+}
diff --git a/arts/examples/example_rc.arts b/arts/examples/example_rc.arts
new file mode 100644
index 00000000..bef5a662
--- /dev/null
+++ b/arts/examples/example_rc.arts
@@ -0,0 +1,63 @@
+name=example_rc
+module=Arts::Synth_NOISE
+{
+  id=45
+  x=4
+  y=1
+  port=outvalue
+  {
+    id=46
+    connect_to=60
+  }
+}
+module=Arts::Synth_AMAN_PLAY
+{
+  id=47
+  x=2
+  y=5
+  port=title
+  {
+    id=48
+  }
+  port=autoRestoreID
+  {
+    id=49
+  }
+  port=left
+  {
+    id=50
+    connect_to=61
+  }
+  port=right
+  {
+    id=51
+    connect_to=61
+  }
+}
+module=Arts::Synth_RC
+{
+  id=57
+  x=3
+  y=3
+  port=b
+  {
+    id=58
+    audio_data=10.00000
+  }
+  port=f
+  {
+    id=59
+    audio_data=10.00000
+  }
+  port=invalue
+  {
+    id=60
+    connect_to=46
+  }
+  port=outvalue
+  {
+    id=61
+    connect_to=50
+    connect_to=51
+  }
+}
diff --git a/arts/examples/example_record.arts b/arts/examples/example_record.arts
new file mode 100644
index 00000000..62c365a9
--- /dev/null
+++ b/arts/examples/example_record.arts
@@ -0,0 +1,75 @@
+name=example_record
+module=Arts::Synth_DEBUG
+{
+  id=13
+  x=4
+  y=3
+  port=comment
+  {
+    id=14
+    string_data=Left
+  }
+  port=invalue
+  {
+    id=15
+  }
+}
+module=Arts::Synth_DEBUG
+{
+  id=19
+  x=8
+  y=3
+  port=comment
+  {
+    id=20
+    string_data=Right
+  }
+  port=invalue
+  {
+    id=21
+  }
+}
+module=Arts::Synth_AMAN_PLAY
+{
+  id=27
+  x=1
+  y=5
+  port=title
+  {
+    id=28
+  }
+  port=autoRestoreID
+  {
+    id=29
+  }
+  port=left
+  {
+    id=30
+  }
+  port=right
+  {
+    id=31
+  }
+}
+module=Arts::Synth_AMAN_RECORD
+{
+  id=56
+  x=1
+  y=1
+  port=title
+  {
+    id=57
+  }
+  port=autoRestoreID
+  {
+    id=58
+  }
+  port=left
+  {
+    id=59
+  }
+  port=right
+  {
+    id=60
+  }
+}
diff --git a/arts/examples/example_sequence.arts b/arts/examples/example_sequence.arts
new file mode 100644
index 00000000..2840657e
--- /dev/null
+++ b/arts/examples/example_sequence.arts
@@ -0,0 +1,85 @@
+name=example_sequence
+module=Arts::Synth_SEQUENCE
+{
+  id=0
+  x=3
+  y=1
+  port=speed
+  {
+    id=1
+    audio_data=0.50000
+  }
+  port=seq
+  {
+    id=2
+    string_data=C-4;D-4;E-4;F-4;G-4;A-4;B-4;C-5;
+  }
+  port=frequency
+  {
+    id=3
+    connect_to=11
+  }
+  port=pos
+  {
+    id=4
+  }
+}
+module=Arts::Synth_AMAN_PLAY
+{
+  id=5
+  x=2
+  y=7
+  port=title
+  {
+    id=6
+    string_data=Sequence
+  }
+  port=autoRestoreID
+  {
+    id=7
+    string_data=Sequence
+  }
+  port=left
+  {
+    id=8
+    connect_to=15
+  }
+  port=right
+  {
+    id=9
+    connect_to=15
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=10
+  x=4
+  y=3
+  port=frequency
+  {
+    id=11
+    connect_to=3
+  }
+  port=pos
+  {
+    id=12
+    connect_to=14
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=13
+  x=4
+  y=5
+  port=pos
+  {
+    id=14
+    connect_to=12
+  }
+  port=outvalue
+  {
+    id=15
+    connect_to=8
+    connect_to=9
+  }
+}
diff --git a/arts/examples/example_shelve_cutoff.arts b/arts/examples/example_shelve_cutoff.arts
new file mode 100644
index 00000000..788a6dd3
--- /dev/null
+++ b/arts/examples/example_shelve_cutoff.arts
@@ -0,0 +1,61 @@
+name=example_shelve_cutoff
+module=Arts::Synth_NOISE
+{
+  id=0
+  x=1
+  y=1
+  port=outvalue
+  {
+    id=1
+    connect_to=10
+    connect_to=17
+  }
+}
+module=Arts::Synth_AMAN_PLAY
+{
+  id=2
+  x=1
+  y=5
+  port=title
+  {
+    id=3
+    string_data=Shelve Cutoff
+  }
+  port=autoRestoreID
+  {
+    id=4
+    string_data=Shelve Cutoff
+  }
+  port=left
+  {
+    id=5
+    connect_to=19
+  }
+  port=right
+  {
+    id=6
+    connect_to=19
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=16
+  x=1
+  y=3
+  port=invalue
+  {
+    id=17
+    connect_to=1
+  }
+  port=frequency
+  {
+    id=18
+    audio_data=3000.00000
+  }
+  port=outvalue
+  {
+    id=19
+    connect_to=5
+    connect_to=6
+  }
+}
diff --git a/arts/examples/example_sine.arts b/arts/examples/example_sine.arts
new file mode 100644
index 00000000..5810a23a
--- /dev/null
+++ b/arts/examples/example_sine.arts
@@ -0,0 +1,58 @@
+name=example_sine
+module=Arts::Synth_FREQUENCY
+{
+  id=0
+  x=1
+  y=1
+  port=frequency
+  {
+    id=1
+    audio_data=440.00000
+  }
+  port=pos
+  {
+    id=2
+    connect_to=7
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=6
+  x=2
+  y=3
+  port=pos
+  {
+    id=7
+    connect_to=2
+  }
+  port=outvalue
+  {
+    id=8
+    connect_to=15
+  }
+}
+module=Arts::Synth_AMAN_PLAY
+{
+  id=12
+  x=1
+  y=5
+  port=title
+  {
+    id=13
+    string_data=Sine
+  }
+  port=autoRestoreID
+  {
+    id=14
+    string_data=Sine
+  }
+  port=left
+  {
+    id=15
+    connect_to=8
+  }
+  port=right
+  {
+    id=16
+  }
+}
diff --git a/arts/examples/example_softsaw.arts b/arts/examples/example_softsaw.arts
new file mode 100644
index 00000000..7ab5202c
--- /dev/null
+++ b/arts/examples/example_softsaw.arts
@@ -0,0 +1,61 @@
+name=example_softsaw
+module=Arts::Synth_FREQUENCY
+{
+  id=0
+  x=1
+  y=1
+  port=frequency
+  {
+    id=1
+    audio_data=440.00000
+  }
+  port=pos
+  {
+    id=2
+    connect_to=10
+    connect_to=16
+  }
+}
+module=Arts::Synth_AMAN_PLAY
+{
+  id=3
+  x=1
+  y=5
+  port=title
+  {
+    id=4
+    string_data=SoftSaw
+  }
+  port=autoRestoreID
+  {
+    id=5
+    string_data=SoftSaw
+  }
+  port=left
+  {
+    id=6
+    connect_to=17
+  }
+  port=right
+  {
+    id=7
+    connect_to=17
+  }
+}
+module=Arts::Synth_WAVE_SOFTSAW
+{
+  id=15
+  x=2
+  y=3
+  port=pos
+  {
+    id=16
+    connect_to=2
+  }
+  port=outvalue
+  {
+    id=17
+    connect_to=6
+    connect_to=7
+  }
+}
diff --git a/arts/examples/example_square.arts b/arts/examples/example_square.arts
new file mode 100644
index 00000000..1e0e1d5a
--- /dev/null
+++ b/arts/examples/example_square.arts
@@ -0,0 +1,61 @@
+name=example_square
+module=Arts::Synth_FREQUENCY
+{
+  id=0
+  x=1
+  y=1
+  port=frequency
+  {
+    id=1
+    audio_data=440.00000
+  }
+  port=pos
+  {
+    id=2
+    connect_to=10
+    connect_to=16
+  }
+}
+module=Arts::Synth_AMAN_PLAY
+{
+  id=3
+  x=1
+  y=5
+  port=title
+  {
+    id=4
+    string_data=Square
+  }
+  port=autoRestoreID
+  {
+    id=5
+    string_data=Square
+  }
+  port=left
+  {
+    id=6
+    connect_to=17
+  }
+  port=right
+  {
+    id=7
+    connect_to=17
+  }
+}
+module=Arts::Synth_WAVE_SQUARE
+{
+  id=15
+  x=2
+  y=3
+  port=pos
+  {
+    id=16
+    connect_to=2
+  }
+  port=outvalue
+  {
+    id=17
+    connect_to=6
+    connect_to=7
+  }
+}
diff --git a/arts/examples/example_stereobeep.arts b/arts/examples/example_stereobeep.arts
new file mode 100644
index 00000000..69c346e9
--- /dev/null
+++ b/arts/examples/example_stereobeep.arts
@@ -0,0 +1,91 @@
+name=example_stereobeep
+module=Arts::Synth_FREQUENCY
+{
+  id=29
+  x=1
+  y=1
+  port=frequency
+  {
+    id=30
+    audio_data=440.00000
+  }
+  port=pos
+  {
+    id=31
+    connect_to=36
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=32
+  x=5
+  y=1
+  port=frequency
+  {
+    id=33
+    audio_data=880.00000
+  }
+  port=pos
+  {
+    id=34
+    connect_to=39
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=35
+  x=2
+  y=3
+  port=pos
+  {
+    id=36
+    connect_to=31
+  }
+  port=outvalue
+  {
+    id=37
+    connect_to=44
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=38
+  x=6
+  y=3
+  port=pos
+  {
+    id=39
+    connect_to=34
+  }
+  port=outvalue
+  {
+    id=40
+    connect_to=45
+  }
+}
+module=Arts::Synth_AMAN_PLAY
+{
+  id=41
+  x=2
+  y=5
+  port=title
+  {
+    id=42
+    string_data=StereoBeep
+  }
+  port=autoRestoreID
+  {
+    id=43
+    string_data=StereoBeep
+  }
+  port=left
+  {
+    id=44
+    connect_to=37
+  }
+  port=right
+  {
+    id=45
+    connect_to=40
+  }
+}
diff --git a/arts/examples/example_tremolo.arts b/arts/examples/example_tremolo.arts
new file mode 100644
index 00000000..0a3130f3
--- /dev/null
+++ b/arts/examples/example_tremolo.arts
@@ -0,0 +1,118 @@
+name=example_tremolo
+module=Arts::Synth_BUS_DOWNLINK
+{
+  id=0
+  x=1
+  y=1
+  port=busname
+  {
+    id=1
+    string_data=Tremolo
+  }
+  port=left
+  {
+    id=2
+    connect_to=9
+  }
+  port=right
+  {
+    id=3
+    connect_to=13
+  }
+}
+module=Arts::Synth_BUS_UPLINK
+{
+  id=4
+  x=1
+  y=7
+  port=busname
+  {
+    id=5
+    string_data=out_soundcard
+  }
+  port=left
+  {
+    id=6
+    connect_to=11
+  }
+  port=right
+  {
+    id=7
+    connect_to=15
+  }
+}
+module=Arts::Synth_TREMOLO
+{
+  id=8
+  x=1
+  y=5
+  port=invalue
+  {
+    id=9
+    connect_to=2
+  }
+  port=inlfo
+  {
+    id=10
+    connect_to=21
+  }
+  port=outvalue
+  {
+    id=11
+    connect_to=6
+  }
+}
+module=Arts::Synth_TREMOLO
+{
+  id=12
+  x=5
+  y=5
+  port=invalue
+  {
+    id=13
+    connect_to=3
+  }
+  port=inlfo
+  {
+    id=14
+    connect_to=21
+  }
+  port=outvalue
+  {
+    id=15
+    connect_to=7
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=16
+  x=6
+  y=1
+  port=frequency
+  {
+    id=17
+    audio_data=5.00000
+  }
+  port=pos
+  {
+    id=18
+    connect_to=20
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=19
+  x=6
+  y=3
+  port=pos
+  {
+    id=20
+    connect_to=18
+  }
+  port=outvalue
+  {
+    id=21
+    connect_to=10
+    connect_to=14
+  }
+}
diff --git a/arts/examples/example_tri.arts b/arts/examples/example_tri.arts
new file mode 100644
index 00000000..7c9e5673
--- /dev/null
+++ b/arts/examples/example_tri.arts
@@ -0,0 +1,61 @@
+name=example_tri
+module=Arts::Synth_FREQUENCY
+{
+  id=0
+  x=1
+  y=1
+  port=frequency
+  {
+    id=1
+    audio_data=440.00000
+  }
+  port=pos
+  {
+    id=2
+    connect_to=10
+    connect_to=16
+  }
+}
+module=Arts::Synth_AMAN_PLAY
+{
+  id=3
+  x=1
+  y=5
+  port=title
+  {
+    id=4
+    string_data=Tri
+  }
+  port=autoRestoreID
+  {
+    id=5
+    string_data=Tri
+  }
+  port=left
+  {
+    id=6
+    connect_to=17
+  }
+  port=right
+  {
+    id=7
+    connect_to=17
+  }
+}
+module=Arts::Synth_WAVE_TRI
+{
+  id=15
+  x=2
+  y=3
+  port=pos
+  {
+    id=16
+    connect_to=2
+  }
+  port=outvalue
+  {
+    id=17
+    connect_to=6
+    connect_to=7
+  }
+}
diff --git a/arts/examples/example_xfade.arts b/arts/examples/example_xfade.arts
new file mode 100644
index 00000000..60ed2022
--- /dev/null
+++ b/arts/examples/example_xfade.arts
@@ -0,0 +1,120 @@
+name=example_xfade
+module=Arts::Synth_AMAN_PLAY
+{
+  id=10
+  x=1
+  y=7
+  port=title
+  {
+    id=11
+    string_data=Crossfade
+  }
+  port=autoRestoreID
+  {
+    id=12
+    string_data=Crossfade
+  }
+  port=left
+  {
+    id=13
+    connect_to=48
+  }
+  port=right
+  {
+    id=14
+    connect_to=48
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=15
+  x=1
+  y=3
+  port=pos
+  {
+    id=16
+    connect_to=20
+  }
+  port=outvalue
+  {
+    id=17
+    connect_to=33
+    connect_to=45
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=18
+  x=1
+  y=1
+  port=frequency
+  {
+    id=19
+    audio_data=440.00000
+  }
+  port=pos
+  {
+    id=20
+    connect_to=16
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=25
+  x=5
+  y=3
+  port=pos
+  {
+    id=26
+    connect_to=30
+  }
+  port=outvalue
+  {
+    id=27
+    connect_to=37
+    connect_to=46
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=28
+  x=5
+  y=1
+  port=frequency
+  {
+    id=29
+    audio_data=880.00000
+  }
+  port=pos
+  {
+    id=30
+    connect_to=26
+  }
+}
+module=Arts::Synth_XFADE
+{
+  id=44
+  x=3
+  y=5
+  port=invalue1
+  {
+    id=45
+    connect_to=17
+  }
+  port=invalue2
+  {
+    id=46
+    connect_to=27
+  }
+  port=percentage
+  {
+    id=47
+    audio_data=0.00000
+  }
+  port=outvalue
+  {
+    id=48
+    connect_to=13
+    connect_to=14
+  }
+}
diff --git a/arts/examples/instrument_arts_all.arts-map b/arts/examples/instrument_arts_all.arts-map
new file mode 100644
index 00000000..0508f8d8
--- /dev/null
+++ b/arts/examples/instrument_arts_all.arts-map
@@ -0,0 +1,14 @@
+ON program=0 DO structure=instrument_tri.arts
+ON program=1 DO structure=instrument_organ2.arts
+ON program=2 DO structure=instrument_slide1.arts
+ON program=3 DO structure=instrument_square.arts
+ON program=4 DO structure=instrument_neworgan.arts
+ON program=5 DO structure=instrument_nokind.arts
+ON program=6 DO structure=instrument_full_square.arts
+ON program=7 DO structure=instrument_simple_sin.arts
+ON program=8 DO structure=instrument_simple_square.arts
+ON program=9 DO structure=instrument_simple_tri.arts
+ON program=10 DO structure=instrument_slide.arts
+ON program=11 pitch=60 DO structure=instrument_deepdrum.arts
+ON program=11 pitch=61 DO structure=instrument_chirpdrum.arts
+ON program=11 pitch=62 DO structure=instrument_hihat.arts
diff --git a/arts/examples/instrument_chirpdrum.arts b/arts/examples/instrument_chirpdrum.arts
new file mode 100644
index 00000000..8b8dcff7
--- /dev/null
+++ b/arts/examples/instrument_chirpdrum.arts
@@ -0,0 +1,260 @@
+name=instrument_chirpdrum
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=104
+  x=2
+  y=5
+  port=active
+  {
+    id=105
+    connect_to=130
+  }
+  port=invalue
+  {
+    id=106
+    connect_to=116
+  }
+  port=attack
+  {
+    id=107
+    audio_data=0.02000
+  }
+  port=decay
+  {
+    id=108
+    audio_data=0.01000
+  }
+  port=sustain
+  {
+    id=109
+    audio_data=0.00010
+  }
+  port=release
+  {
+    id=110
+    audio_data=0.00100
+  }
+  port=outvalue
+  {
+    id=111
+    connect_to=122
+  }
+  port=done
+  {
+    id=112
+    connect_to=133
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=113
+  x=2
+  y=3
+  port=invalue1
+  {
+    id=114
+    connect_to=118
+  }
+  port=invalue2
+  {
+    id=115
+    connect_to=129
+  }
+  port=outvalue
+  {
+    id=116
+    connect_to=106
+  }
+}
+module=Arts::Synth_NOISE
+{
+  id=117
+  x=1
+  y=2
+  port=outvalue
+  {
+    id=118
+    connect_to=114
+  }
+}
+module=Arts::Synth_MOOG_VCF
+{
+  id=119
+  x=1
+  y=6
+  port=frequency
+  {
+    id=120
+    audio_data=11000.00000
+  }
+  port=resonance
+  {
+    id=121
+    audio_data=1.90000
+  }
+  port=invalue
+  {
+    id=122
+    connect_to=111
+  }
+  port=outvalue
+  {
+    id=123
+    connect_to=126
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=124
+  x=1
+  y=7
+  port=invalue1
+  {
+    id=125
+    audio_data=15.00000
+  }
+  port=invalue2
+  {
+    id=126
+    connect_to=123
+  }
+  port=outvalue
+  {
+    id=127
+    connect_to=142
+  }
+}
+module=Arts::Synth_RC
+{
+  id=139
+  x=1
+  y=10
+  port=b
+  {
+    id=140
+    audio_data=5.00000
+  }
+  port=f
+  {
+    id=141
+    audio_data=5.00000
+  }
+  port=invalue
+  {
+    id=142
+    connect_to=127
+  }
+  port=outvalue
+  {
+    id=143
+    connect_to=132
+    connect_to=131
+  }
+}
+structureport
+{
+  name=frequency
+  x=1
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=128
+  }
+}
+structureport
+{
+  name=velocity
+  x=3
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=129
+    connect_to=115
+  }
+}
+structureport
+{
+  name=pressed
+  x=5
+  y=0
+  position=3
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=130
+    connect_to=105
+  }
+}
+structureport
+{
+  name=left
+  x=2
+  y=13
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=131
+    connect_to=143
+  }
+}
+structureport
+{
+  name=right
+  x=3
+  y=13
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=132
+    connect_to=143
+  }
+}
+structureport
+{
+  name=done
+  x=5
+  y=8
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=133
+    connect_to=112
+  }
+}
diff --git a/arts/examples/instrument_deepdrum.arts b/arts/examples/instrument_deepdrum.arts
new file mode 100644
index 00000000..f6b1ebef
--- /dev/null
+++ b/arts/examples/instrument_deepdrum.arts
@@ -0,0 +1,255 @@
+name=instrument_deepdrum
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=144
+  x=2
+  y=5
+  port=active
+  {
+    id=145
+    connect_to=170
+  }
+  port=invalue
+  {
+    id=146
+    connect_to=156
+  }
+  port=attack
+  {
+    id=147
+    audio_data=0.02000
+  }
+  port=decay
+  {
+    id=148
+    audio_data=0.01000
+  }
+  port=sustain
+  {
+    id=149
+    audio_data=0.00100
+  }
+  port=release
+  {
+    id=150
+    audio_data=0.00100
+  }
+  port=outvalue
+  {
+    id=151
+    connect_to=162
+  }
+  port=done
+  {
+    id=152
+    connect_to=173
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=153
+  x=2
+  y=3
+  port=invalue1
+  {
+    id=154
+    connect_to=179
+  }
+  port=invalue2
+  {
+    id=155
+    connect_to=169
+  }
+  port=outvalue
+  {
+    id=156
+    connect_to=146
+  }
+}
+module=Arts::Synth_MOOG_VCF
+{
+  id=159
+  x=1
+  y=6
+  port=frequency
+  {
+    id=160
+    audio_data=400.00000
+  }
+  port=resonance
+  {
+    id=161
+    audio_data=2.90000
+  }
+  port=invalue
+  {
+    id=162
+    connect_to=151
+  }
+  port=outvalue
+  {
+    id=163
+    connect_to=166
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=164
+  x=1
+  y=7
+  port=invalue1
+  {
+    id=165
+    audio_data=150.00000
+  }
+  port=invalue2
+  {
+    id=166
+    connect_to=163
+  }
+  port=outvalue
+  {
+    id=167
+    connect_to=171
+    connect_to=172
+  }
+}
+module=Arts::Synth_WAVE_TRI
+{
+  id=177
+  x=1
+  y=2
+  port=pos
+  {
+    id=178
+    connect_to=185
+  }
+  port=outvalue
+  {
+    id=179
+    connect_to=154
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=183
+  x=0
+  y=1
+  port=frequency
+  {
+    id=184
+    audio_data=8000.00000
+  }
+  port=pos
+  {
+    id=185
+    connect_to=178
+  }
+}
+structureport
+{
+  name=frequency
+  x=1
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=168
+  }
+}
+structureport
+{
+  name=velocity
+  x=3
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=169
+    connect_to=155
+  }
+}
+structureport
+{
+  name=pressed
+  x=5
+  y=0
+  position=3
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=170
+    connect_to=145
+  }
+}
+structureport
+{
+  name=left
+  x=2
+  y=9
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=171
+    connect_to=167
+  }
+}
+structureport
+{
+  name=right
+  x=3
+  y=9
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=172
+    connect_to=167
+  }
+}
+structureport
+{
+  name=done
+  x=5
+  y=8
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=173
+    connect_to=152
+  }
+}
diff --git a/arts/examples/instrument_flexible_slide.arts b/arts/examples/instrument_flexible_slide.arts
new file mode 100644
index 00000000..b1ff28d6
--- /dev/null
+++ b/arts/examples/instrument_flexible_slide.arts
@@ -0,0 +1,537 @@
+name=instrument_flexible_slide
+module=Arts::Synth_FREQUENCY
+{
+  id=4
+  x=4
+  y=3
+  port=frequency
+  {
+    id=5
+    connect_to=79
+  }
+  port=pos
+  {
+    id=6
+    connect_to=32
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=9
+  x=13
+  y=4
+  port=active
+  {
+    id=10
+    connect_to=81
+  }
+  port=invalue
+  {
+    id=11
+    connect_to=29
+  }
+  port=attack
+  {
+    id=12
+    connect_to=78
+  }
+  port=decay
+  {
+    id=13
+    connect_to=76
+  }
+  port=sustain
+  {
+    id=14
+    audio_data=0.70000
+  }
+  port=release
+  {
+    id=15
+    audio_data=0.05000
+  }
+  port=outvalue
+  {
+    id=16
+    connect_to=40
+  }
+  port=done
+  {
+    id=17
+    connect_to=8
+    connect_to=84
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=22
+  x=12
+  y=2
+  port=active
+  {
+    id=23
+    connect_to=81
+  }
+  port=invalue
+  {
+    id=24
+    connect_to=80
+  }
+  port=attack
+  {
+    id=25
+    connect_to=78
+  }
+  port=decay
+  {
+    id=26
+    connect_to=75
+  }
+  port=sustain
+  {
+    id=27
+    audio_data=0.00010
+  }
+  port=release
+  {
+    id=28
+    audio_data=0.10000
+  }
+  port=outvalue
+  {
+    id=29
+    connect_to=11
+    connect_to=43
+  }
+  port=done
+  {
+    id=30
+  }
+}
+module=Arts::Synth_WAVE_TRI
+{
+  id=31
+  x=5
+  y=4
+  port=pos
+  {
+    id=32
+    connect_to=6
+  }
+  port=outvalue
+  {
+    id=33
+    connect_to=58
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=34
+  x=5
+  y=11
+  port=invalue
+  {
+    id=35
+    connect_to=60
+  }
+  port=frequency
+  {
+    id=36
+    connect_to=72
+  }
+  port=outvalue
+  {
+    id=37
+    connect_to=39
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=38
+  x=6
+  y=12
+  port=invalue1
+  {
+    id=39
+    connect_to=37
+  }
+  port=invalue2
+  {
+    id=40
+    connect_to=16
+  }
+  port=outvalue
+  {
+    id=41
+    connect_to=20
+    connect_to=21
+    connect_to=82
+    connect_to=83
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=42
+  x=11
+  y=6
+  port=invalue1
+  {
+    id=43
+    connect_to=29
+  }
+  port=invalue2
+  {
+    id=44
+    connect_to=74
+  }
+  port=outvalue
+  {
+    id=45
+    connect_to=71
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=46
+  x=1
+  y=3
+  port=invalue1
+  {
+    id=47
+    connect_to=79
+  }
+  port=invalue2
+  {
+    id=48
+    connect_to=73
+  }
+  port=outvalue
+  {
+    id=49
+    connect_to=51
+    connect_to=70
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=50
+  x=2
+  y=5
+  port=frequency
+  {
+    id=51
+    connect_to=49
+  }
+  port=pos
+  {
+    id=52
+    connect_to=54
+  }
+}
+module=Arts::Synth_WAVE_TRI
+{
+  id=53
+  x=3
+  y=6
+  port=pos
+  {
+    id=54
+    connect_to=52
+  }
+  port=outvalue
+  {
+    id=55
+    connect_to=57
+  }
+}
+module=Arts::Synth_XFADE
+{
+  id=56
+  x=4
+  y=7
+  port=invalue1
+  {
+    id=57
+    connect_to=55
+  }
+  port=invalue2
+  {
+    id=58
+    connect_to=33
+  }
+  port=percentage
+  {
+    id=59
+    connect_to=68
+  }
+  port=outvalue
+  {
+    id=60
+    connect_to=35
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=61
+  x=7
+  y=3
+  port=invalue1
+  {
+    id=62
+    connect_to=80
+  }
+  port=invalue2
+  {
+    id=63
+    audio_data=2.00000
+  }
+  port=outvalue
+  {
+    id=64
+    connect_to=66
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=65
+  x=8
+  y=4
+  port=invalue1
+  {
+    id=66
+    connect_to=64
+  }
+  port=invalue2
+  {
+    id=67
+    audio_data=-1.00000
+  }
+  port=outvalue
+  {
+    id=68
+    connect_to=59
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=69
+  x=7
+  y=9
+  port=invalue1
+  {
+    id=70
+    connect_to=49
+  }
+  port=invalue2
+  {
+    id=71
+    connect_to=45
+  }
+  port=outvalue
+  {
+    id=72
+    connect_to=36
+  }
+}
+structureport
+{
+  name=detune
+  x=1
+  y=0
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=73
+    connect_to=48
+  }
+}
+structureport
+{
+  name=cutoff
+  x=13
+  y=5
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=74
+    connect_to=44
+  }
+}
+structureport
+{
+  name=decay
+  x=16
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=75
+    connect_to=26
+  }
+}
+structureport
+{
+  name=decay2
+  x=19
+  y=0
+  position=3
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=76
+    connect_to=13
+  }
+}
+structureport
+{
+  name=attack
+  x=17
+  y=0
+  position=5
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=78
+    connect_to=12
+    connect_to=25
+  }
+}
+structureport
+{
+  name=frequency
+  x=3
+  y=0
+  position=6
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=79
+    connect_to=5
+    connect_to=47
+  }
+}
+structureport
+{
+  name=velocity
+  x=5
+  y=0
+  position=7
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=80
+    connect_to=62
+    connect_to=24
+  }
+}
+structureport
+{
+  name=pressed
+  x=7
+  y=0
+  position=8
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=81
+    connect_to=23
+    connect_to=10
+  }
+}
+structureport
+{
+  name=left
+  x=1
+  y=14
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=82
+    connect_to=41
+  }
+}
+structureport
+{
+  name=right
+  x=3
+  y=14
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=83
+    connect_to=41
+  }
+}
+structureport
+{
+  name=done
+  x=5
+  y=14
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=84
+    connect_to=17
+  }
+}
diff --git a/arts/examples/instrument_flexible_slide_GUI.arts b/arts/examples/instrument_flexible_slide_GUI.arts
new file mode 100644
index 00000000..3b0f0bca
--- /dev/null
+++ b/arts/examples/instrument_flexible_slide_GUI.arts
@@ -0,0 +1,481 @@
+name=instrument_flexible_slide_GUI
+module=Arts::Poti
+{
+  id=0
+  x=3
+  y=4
+  port=widgetID
+  {
+    id=1
+  }
+  port=parent
+  {
+    id=2
+  }
+  port=x
+  {
+    id=3
+    any_data=value:000000056c6f6e67000000000400000064
+  }
+  port=y
+  {
+    id=4
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=width
+  {
+    id=5
+    any_data=value:000000056c6f6e6700000000040000000a
+  }
+  port=height
+  {
+    id=6
+    any_data=value:000000056c6f6e6700000000040000000a
+  }
+  port=visible
+  {
+    id=7
+    any_data=value:00000008626f6f6c65616e000000000101
+  }
+  port=text
+  {
+    id=8
+    string_data=DETUNE
+  }
+  port=color
+  {
+    id=9
+    string_data=#ff8000
+  }
+  port=min
+  {
+    id=10
+    audio_data=2.00000
+  }
+  port=max
+  {
+    id=11
+    audio_data=2.03000
+  }
+  port=value
+  {
+    id=12
+  }
+}
+module=Arts::Widget
+{
+  id=13
+  x=1
+  y=2
+  port=widgetID
+  {
+    id=14
+  }
+  port=parent
+  {
+    id=15
+  }
+  port=x
+  {
+    id=16
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=y
+  {
+    id=17
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=width
+  {
+    id=18
+    any_data=value:000000056c6f6e67000000000400000032
+  }
+  port=height
+  {
+    id=19
+    any_data=value:000000056c6f6e67000000000400000032
+  }
+  port=visible
+  {
+    id=20
+    any_data=value:00000008626f6f6c65616e000000000101
+  }
+}
+module=Arts::Poti
+{
+  id=21
+  x=3
+  y=6
+  port=widgetID
+  {
+    id=22
+  }
+  port=parent
+  {
+    id=23
+  }
+  port=x
+  {
+    id=24
+    any_data=value:000000056c6f6e670000000004000000c8
+  }
+  port=y
+  {
+    id=25
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=width
+  {
+    id=26
+  }
+  port=height
+  {
+    id=27
+  }
+  port=visible
+  {
+    id=28
+    any_data=value:00000008626f6f6c65616e000000000101
+  }
+  port=text
+  {
+    id=29
+    string_data=CUTOFF
+  }
+  port=color
+  {
+    id=30
+    string_data=red
+  }
+  port=min
+  {
+    id=31
+  }
+  port=max
+  {
+    id=32
+  }
+  port=value
+  {
+    id=33
+  }
+}
+module=Arts::Poti
+{
+  id=34
+  x=3
+  y=10
+  port=widgetID
+  {
+    id=35
+  }
+  port=parent
+  {
+    id=36
+  }
+  port=x
+  {
+    id=37
+    any_data=value:000000056c6f6e67000000000400000190
+  }
+  port=y
+  {
+    id=38
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=width
+  {
+    id=39
+  }
+  port=height
+  {
+    id=40
+  }
+  port=visible
+  {
+    id=41
+    any_data=value:00000008626f6f6c65616e000000000101
+  }
+  port=text
+  {
+    id=42
+    string_data=DECAY
+  }
+  port=color
+  {
+    id=43
+    string_data=#00A000
+  }
+  port=min
+  {
+    id=44
+    audio_data=0.01000
+  }
+  port=max
+  {
+    id=45
+    audio_data=8.00000
+  }
+  port=value
+  {
+    id=46
+  }
+}
+module=Arts::Poti
+{
+  id=47
+  x=3
+  y=12
+  port=widgetID
+  {
+    id=48
+  }
+  port=parent
+  {
+    id=49
+  }
+  port=x
+  {
+    id=50
+    any_data=value:000000056c6f6e670000000004000001f4
+  }
+  port=y
+  {
+    id=51
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=width
+  {
+    id=52
+  }
+  port=height
+  {
+    id=53
+  }
+  port=visible
+  {
+    id=54
+    any_data=value:00000008626f6f6c65616e000000000101
+  }
+  port=text
+  {
+    id=55
+    string_data=DECAY2
+  }
+  port=color
+  {
+    id=56
+    string_data=darkgrey
+  }
+  port=min
+  {
+    id=57
+    audio_data=0.00010
+  }
+  port=max
+  {
+    id=58
+    audio_data=2.00000
+  }
+  port=value
+  {
+    id=59
+  }
+}
+module=Arts::Poti
+{
+  id=60
+  x=3
+  y=8
+  port=widgetID
+  {
+    id=61
+  }
+  port=parent
+  {
+    id=62
+  }
+  port=x
+  {
+    id=63
+    any_data=value:000000056c6f6e6700000000040000012c
+  }
+  port=y
+  {
+    id=64
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=width
+  {
+    id=65
+  }
+  port=height
+  {
+    id=66
+  }
+  port=visible
+  {
+    id=67
+    any_data=value:00000008626f6f6c65616e000000000101
+  }
+  port=text
+  {
+    id=68
+    string_data=ATTACK
+  }
+  port=color
+  {
+    id=69
+    string_data=#00A000
+  }
+  port=min
+  {
+    id=70
+    audio_data=0.01000
+  }
+  port=max
+  {
+    id=71
+    audio_data=0.90000
+  }
+  port=value
+  {
+    id=72
+  }
+}
+structureport
+{
+  name=parent
+  x=2
+  y=1
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=73
+  }
+}
+structureport
+{
+  name=x
+  x=3
+  y=1
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=property
+  }
+  data
+  {
+    id=74
+  }
+}
+structureport
+{
+  name=y
+  x=4
+  y=1
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=property
+  }
+  data
+  {
+    id=75
+  }
+}
+structureport
+{
+  name=detune
+  x=5
+  y=5
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=76
+  }
+}
+structureport
+{
+  name=cutoff
+  x=5
+  y=7
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=77
+  }
+}
+structureport
+{
+  name=decay
+  x=5
+  y=11
+  position=3
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=78
+  }
+}
+structureport
+{
+  name=decay2
+  x=5
+  y=13
+  position=4
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=79
+  }
+}
+structureport
+{
+  name=attack
+  x=5
+  y=9
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=80
+  }
+}
diff --git a/arts/examples/instrument_fm_horn.arts b/arts/examples/instrument_fm_horn.arts
new file mode 100644
index 00000000..698c7792
--- /dev/null
+++ b/arts/examples/instrument_fm_horn.arts
@@ -0,0 +1,301 @@
+name=instrument_fm_horn
+module=Arts::Synth_FM_SOURCE
+{
+  id=0
+  x=2
+  y=7
+  port=frequency
+  {
+    id=1
+    connect_to=47
+  }
+  port=modulator
+  {
+    id=2
+    connect_to=22
+  }
+  port=modlevel
+  {
+    id=3
+    audio_data=0.30000
+  }
+  port=pos
+  {
+    id=4
+    connect_to=6
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=5
+  x=3
+  y=8
+  port=pos
+  {
+    id=6
+    connect_to=4
+  }
+  port=outvalue
+  {
+    id=7
+    connect_to=16
+    connect_to=33
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=8
+  x=2
+  y=4
+  port=frequency
+  {
+    id=9
+    connect_to=45
+  }
+  port=pos
+  {
+    id=10
+    connect_to=12
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=11
+  x=3
+  y=5
+  port=pos
+  {
+    id=12
+    connect_to=10
+  }
+  port=outvalue
+  {
+    id=13
+    connect_to=19
+  }
+}
+module=Arts::Synth_CDELAY
+{
+  id=14
+  x=7
+  y=8
+  port=time
+  {
+    id=15
+  }
+  port=invalue
+  {
+    id=16
+    connect_to=7
+  }
+  port=outvalue
+  {
+    id=17
+    connect_to=20
+  }
+}
+module=Arts::Synth_XFADE
+{
+  id=18
+  x=7
+  y=6
+  port=invalue1
+  {
+    id=19
+    connect_to=13
+  }
+  port=invalue2
+  {
+    id=20
+    connect_to=17
+  }
+  port=percentage
+  {
+    id=21
+    audio_data=0.40000
+  }
+  port=outvalue
+  {
+    id=22
+    connect_to=2
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=31
+  x=3
+  y=11
+  port=active
+  {
+    id=32
+    connect_to=49
+  }
+  port=invalue
+  {
+    id=33
+    connect_to=7
+  }
+  port=attack
+  {
+    id=34
+    audio_data=0.10000
+  }
+  port=decay
+  {
+    id=35
+    audio_data=0.10000
+  }
+  port=sustain
+  {
+    id=36
+    audio_data=0.70000
+  }
+  port=release
+  {
+    id=37
+    audio_data=0.10000
+  }
+  port=outvalue
+  {
+    id=38
+    connect_to=29
+    connect_to=30
+    connect_to=50
+    connect_to=51
+  }
+  port=done
+  {
+    id=39
+    connect_to=41
+    connect_to=52
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=42
+  x=1
+  y=3
+  port=invalue1
+  {
+    id=43
+    connect_to=47
+  }
+  port=invalue2
+  {
+    id=44
+    audio_data=1.01000
+  }
+  port=outvalue
+  {
+    id=45
+    connect_to=9
+  }
+}
+structureport
+{
+  name=frequency
+  x=1
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=47
+    connect_to=43
+    connect_to=1
+  }
+}
+structureport
+{
+  name=velocity
+  x=3
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=48
+  }
+}
+structureport
+{
+  name=pressed
+  x=5
+  y=0
+  position=3
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=49
+    connect_to=32
+  }
+}
+structureport
+{
+  name=left
+  x=1
+  y=13
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=50
+    connect_to=38
+  }
+}
+structureport
+{
+  name=right
+  x=3
+  y=13
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=51
+    connect_to=38
+  }
+}
+structureport
+{
+  name=done
+  x=5
+  y=13
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=52
+    connect_to=39
+  }
+}
diff --git a/arts/examples/instrument_full_square.arts b/arts/examples/instrument_full_square.arts
new file mode 100644
index 00000000..2e562000
--- /dev/null
+++ b/arts/examples/instrument_full_square.arts
@@ -0,0 +1,422 @@
+name=instrument_full_square
+module=Arts::Synth_FREQUENCY
+{
+  id=0
+  x=1
+  y=2
+  port=frequency
+  {
+    id=1
+    connect_to=59
+  }
+  port=pos
+  {
+    id=2
+    connect_to=13
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=3
+  x=0
+  y=9
+  port=active
+  {
+    id=4
+    connect_to=61
+  }
+  port=invalue
+  {
+    id=5
+    connect_to=58
+  }
+  port=attack
+  {
+    id=6
+    audio_data=0.03000
+  }
+  port=decay
+  {
+    id=7
+    audio_data=0.10000
+  }
+  port=sustain
+  {
+    id=8
+    audio_data=0.60000
+  }
+  port=release
+  {
+    id=9
+    audio_data=0.30000
+  }
+  port=outvalue
+  {
+    id=10
+    connect_to=62
+    connect_to=63
+  }
+  port=done
+  {
+    id=11
+    connect_to=64
+  }
+}
+module=Arts::Synth_WAVE_SQUARE
+{
+  id=12
+  x=1
+  y=4
+  port=pos
+  {
+    id=13
+    connect_to=2
+  }
+  port=outvalue
+  {
+    id=14
+    connect_to=16
+    connect_to=21
+    connect_to=28
+    connect_to=52
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=15
+  x=6
+  y=6
+  port=invalue1
+  {
+    id=16
+    connect_to=14
+  }
+  port=invalue2
+  {
+    id=17
+    connect_to=38
+  }
+  port=outvalue
+  {
+    id=18
+    connect_to=24
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=19
+  x=15
+  y=6
+  port=invalue1
+  {
+    id=20
+    connect_to=26
+  }
+  port=invalue2
+  {
+    id=21
+    connect_to=14
+  }
+  port=outvalue
+  {
+    id=22
+    connect_to=48
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=23
+  x=10
+  y=6
+  port=invalue1
+  {
+    id=24
+    connect_to=18
+  }
+  port=invalue2
+  {
+    id=25
+    connect_to=42
+  }
+  port=outvalue
+  {
+    id=26
+    connect_to=20
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=27
+  x=6
+  y=2
+  port=invalue1
+  {
+    id=28
+    connect_to=14
+  }
+  port=invalue2
+  {
+    id=29
+    audio_data=2.00000
+  }
+  port=outvalue
+  {
+    id=30
+    connect_to=32
+    connect_to=36
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=31
+  x=10
+  y=2
+  port=invalue1
+  {
+    id=32
+    connect_to=30
+  }
+  port=invalue2
+  {
+    id=33
+    audio_data=16.00000
+  }
+  port=outvalue
+  {
+    id=34
+    connect_to=40
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=35
+  x=6
+  y=4
+  port=invalue
+  {
+    id=36
+    connect_to=30
+  }
+  port=frequency
+  {
+    id=37
+    audio_data=6000.00000
+  }
+  port=outvalue
+  {
+    id=38
+    connect_to=17
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=39
+  x=10
+  y=4
+  port=invalue
+  {
+    id=40
+    connect_to=34
+  }
+  port=frequency
+  {
+    id=41
+    audio_data=2000.00000
+  }
+  port=outvalue
+  {
+    id=42
+    connect_to=25
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=43
+  x=12
+  y=9
+  port=invalue
+  {
+    id=44
+    connect_to=54
+  }
+  port=frequency
+  {
+    id=45
+    audio_data=8000.00000
+  }
+  port=outvalue
+  {
+    id=46
+    connect_to=57
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=47
+  x=16
+  y=7
+  port=invalue1
+  {
+    id=48
+    connect_to=22
+  }
+  port=invalue2
+  {
+    id=49
+    audio_data=0.10000
+  }
+  port=outvalue
+  {
+    id=50
+    connect_to=53
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=51
+  x=16
+  y=9
+  port=invalue1
+  {
+    id=52
+    connect_to=14
+  }
+  port=invalue2
+  {
+    id=53
+    connect_to=50
+  }
+  port=outvalue
+  {
+    id=54
+    connect_to=44
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=55
+  x=8
+  y=9
+  port=invalue1
+  {
+    id=56
+    audio_data=0.20000
+  }
+  port=invalue2
+  {
+    id=57
+    connect_to=46
+  }
+  port=outvalue
+  {
+    id=58
+    connect_to=5
+  }
+}
+structureport
+{
+  name=frequency
+  x=2
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=59
+    connect_to=1
+  }
+}
+structureport
+{
+  name=velocity
+  x=4
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=60
+  }
+}
+structureport
+{
+  name=pressed
+  x=1
+  y=8
+  position=3
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=61
+    connect_to=4
+  }
+}
+structureport
+{
+  name=left
+  x=2
+  y=11
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=62
+    connect_to=10
+  }
+}
+structureport
+{
+  name=right
+  x=4
+  y=11
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=63
+    connect_to=10
+  }
+}
+structureport
+{
+  name=done
+  x=6
+  y=11
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=64
+    connect_to=11
+  }
+}
diff --git a/arts/examples/instrument_hihat.arts b/arts/examples/instrument_hihat.arts
new file mode 100644
index 00000000..68205093
--- /dev/null
+++ b/arts/examples/instrument_hihat.arts
@@ -0,0 +1,235 @@
+name=instrument_hihat
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=0
+  x=2
+  y=5
+  port=active
+  {
+    id=1
+    connect_to=31
+  }
+  port=invalue
+  {
+    id=2
+    connect_to=12
+  }
+  port=attack
+  {
+    id=3
+    audio_data=0.00010
+  }
+  port=decay
+  {
+    id=4
+    audio_data=0.04000
+  }
+  port=sustain
+  {
+    id=5
+    audio_data=0.00010
+  }
+  port=release
+  {
+    id=6
+    audio_data=0.00100
+  }
+  port=outvalue
+  {
+    id=7
+    connect_to=18
+    connect_to=22
+  }
+  port=done
+  {
+    id=8
+    connect_to=34
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=9
+  x=2
+  y=3
+  port=invalue1
+  {
+    id=10
+    connect_to=14
+  }
+  port=invalue2
+  {
+    id=11
+    connect_to=30
+  }
+  port=outvalue
+  {
+    id=12
+    connect_to=2
+  }
+}
+module=Arts::Synth_NOISE
+{
+  id=13
+  x=1
+  y=2
+  port=outvalue
+  {
+    id=14
+    connect_to=10
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=20
+  x=1
+  y=7
+  port=invalue1
+  {
+    id=21
+    audio_data=2.00000
+  }
+  port=invalue2
+  {
+    id=22
+    connect_to=7
+  }
+  port=outvalue
+  {
+    id=23
+    connect_to=27
+  }
+}
+module=Arts::Synth_RC
+{
+  id=24
+  x=1
+  y=10
+  port=b
+  {
+    id=25
+    audio_data=2.00000
+  }
+  port=f
+  {
+    id=26
+    audio_data=4.00000
+  }
+  port=invalue
+  {
+    id=27
+    connect_to=23
+  }
+  port=outvalue
+  {
+    id=28
+    connect_to=32
+    connect_to=33
+  }
+}
+structureport
+{
+  name=frequency
+  x=1
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=29
+  }
+}
+structureport
+{
+  name=velocity
+  x=3
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=30
+    connect_to=11
+  }
+}
+structureport
+{
+  name=pressed
+  x=5
+  y=0
+  position=3
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=31
+    connect_to=1
+  }
+}
+structureport
+{
+  name=left
+  x=2
+  y=13
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=32
+    connect_to=28
+  }
+}
+structureport
+{
+  name=right
+  x=3
+  y=13
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=33
+    connect_to=28
+  }
+}
+structureport
+{
+  name=done
+  x=5
+  y=8
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=34
+    connect_to=8
+  }
+}
diff --git a/arts/examples/instrument_moog_vcf_tune.arts b/arts/examples/instrument_moog_vcf_tune.arts
new file mode 100644
index 00000000..51d057a7
--- /dev/null
+++ b/arts/examples/instrument_moog_vcf_tune.arts
@@ -0,0 +1,341 @@
+name=instrument_moog_vcf_tune
+module=Arts::Synth_FREQUENCY
+{
+  id=4
+  x=0
+  y=5
+  port=frequency
+  {
+    id=5
+    connect_to=48
+  }
+  port=pos
+  {
+    id=6
+    connect_to=23
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=7
+  x=5
+  y=13
+  port=active
+  {
+    id=8
+    connect_to=50
+  }
+  port=invalue
+  {
+    id=9
+    connect_to=43
+  }
+  port=attack
+  {
+    id=10
+    audio_data=0.03000
+  }
+  port=decay
+  {
+    id=11
+    audio_data=0.10000
+  }
+  port=sustain
+  {
+    id=12
+    audio_data=0.60000
+  }
+  port=release
+  {
+    id=13
+    audio_data=0.20000
+  }
+  port=outvalue
+  {
+    id=14
+    connect_to=20
+    connect_to=21
+    connect_to=51
+    connect_to=52
+  }
+  port=done
+  {
+    id=15
+    connect_to=17
+    connect_to=53
+  }
+}
+module=Arts::Synth_WAVE_TRI
+{
+  id=22
+  x=1
+  y=6
+  port=pos
+  {
+    id=23
+    connect_to=6
+  }
+  port=outvalue
+  {
+    id=24
+    connect_to=32
+  }
+}
+module=Arts::Synth_WAVE_TRI
+{
+  id=25
+  x=5
+  y=7
+  port=pos
+  {
+    id=26
+    connect_to=30
+  }
+  port=outvalue
+  {
+    id=27
+    connect_to=33
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=28
+  x=4
+  y=6
+  port=frequency
+  {
+    id=29
+    connect_to=38
+  }
+  port=pos
+  {
+    id=30
+    connect_to=26
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=31
+  x=3
+  y=9
+  port=invalue1
+  {
+    id=32
+    connect_to=24
+  }
+  port=invalue2
+  {
+    id=33
+    connect_to=27
+  }
+  port=outvalue
+  {
+    id=34
+    connect_to=42
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=35
+  x=3
+  y=5
+  port=invalue1
+  {
+    id=36
+    connect_to=48
+  }
+  port=invalue2
+  {
+    id=37
+    connect_to=47
+  }
+  port=outvalue
+  {
+    id=38
+    connect_to=29
+  }
+}
+module=Arts::Synth_MOOG_VCF
+{
+  id=39
+  x=7
+  y=11
+  port=frequency
+  {
+    id=40
+  }
+  port=resonance
+  {
+    id=41
+  }
+  port=invalue
+  {
+    id=42
+    connect_to=34
+  }
+  port=outvalue
+  {
+    id=43
+    connect_to=9
+  }
+}
+structureport
+{
+  name=cutoff
+  x=9
+  y=10
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=45
+  }
+}
+structureport
+{
+  name=resonance
+  x=10
+  y=10
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=46
+  }
+}
+structureport
+{
+  name=detune
+  x=5
+  y=4
+  position=3
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=47
+    connect_to=37
+  }
+}
+structureport
+{
+  name=frequency
+  x=1
+  y=0
+  position=4
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=48
+    connect_to=5
+    connect_to=36
+  }
+}
+structureport
+{
+  name=velocity
+  x=3
+  y=0
+  position=5
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=49
+  }
+}
+structureport
+{
+  name=pressed
+  x=5
+  y=0
+  position=6
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=50
+    connect_to=8
+  }
+}
+structureport
+{
+  name=left
+  x=1
+  y=15
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=51
+    connect_to=14
+  }
+}
+structureport
+{
+  name=right
+  x=3
+  y=15
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=52
+    connect_to=14
+  }
+}
+structureport
+{
+  name=done
+  x=5
+  y=15
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=53
+    connect_to=15
+  }
+}
diff --git a/arts/examples/instrument_moog_vcf_tune_GUI.arts b/arts/examples/instrument_moog_vcf_tune_GUI.arts
new file mode 100644
index 00000000..6db62f60
--- /dev/null
+++ b/arts/examples/instrument_moog_vcf_tune_GUI.arts
@@ -0,0 +1,331 @@
+name=instrument_moog_vcf_tune_GUI
+module=Arts::Widget
+{
+  id=0
+  x=1
+  y=2
+  port=widgetID
+  {
+    id=1
+  }
+  port=parent
+  {
+    id=2
+  }
+  port=x
+  {
+    id=3
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=y
+  {
+    id=4
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=width
+  {
+    id=5
+    any_data=value:000000056c6f6e6700000000040000000a
+  }
+  port=height
+  {
+    id=6
+    any_data=value:000000056c6f6e6700000000040000000a
+  }
+  port=visible
+  {
+    id=7
+    any_data=value:00000008626f6f6c65616e000000000101
+  }
+}
+module=Arts::Poti
+{
+  id=8
+  x=3
+  y=4
+  port=widgetID
+  {
+    id=9
+  }
+  port=parent
+  {
+    id=10
+  }
+  port=x
+  {
+    id=11
+    any_data=value:000000056c6f6e67000000000400000064
+  }
+  port=y
+  {
+    id=12
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=width
+  {
+    id=13
+    any_data=value:000000056c6f6e6700000000040000000a
+  }
+  port=height
+  {
+    id=14
+    any_data=value:000000056c6f6e6700000000040000000a
+  }
+  port=visible
+  {
+    id=15
+    any_data=value:00000008626f6f6c65616e000000000101
+  }
+  port=text
+  {
+    id=16
+    string_data=   CUTOFF
+  }
+  port=color
+  {
+    id=17
+    string_data=red
+  }
+  port=min
+  {
+    id=18
+    audio_data=100.00000
+  }
+  port=max
+  {
+    id=19
+    audio_data=8000.00000
+  }
+  port=value
+  {
+    id=20
+  }
+}
+module=Arts::Poti
+{
+  id=21
+  x=3
+  y=7
+  port=widgetID
+  {
+    id=22
+  }
+  port=parent
+  {
+    id=23
+  }
+  port=x
+  {
+    id=24
+    any_data=value:000000056c6f6e670000000004000000c8
+  }
+  port=y
+  {
+    id=25
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=width
+  {
+    id=26
+    any_data=value:000000056c6f6e6700000000040000000a
+  }
+  port=height
+  {
+    id=27
+    any_data=value:000000056c6f6e6700000000040000000a
+  }
+  port=visible
+  {
+    id=28
+    any_data=value:00000008626f6f6c65616e000000000101
+  }
+  port=text
+  {
+    id=29
+    string_data=      RESO
+  }
+  port=color
+  {
+    id=30
+    string_data=red
+  }
+  port=min
+  {
+    id=31
+    audio_data=0.00000
+  }
+  port=max
+  {
+    id=32
+    audio_data=3.95000
+  }
+  port=value
+  {
+    id=33
+  }
+}
+module=Arts::Poti
+{
+  id=34
+  x=3
+  y=10
+  port=widgetID
+  {
+    id=35
+  }
+  port=parent
+  {
+    id=36
+  }
+  port=x
+  {
+    id=37
+    any_data=value:000000056c6f6e6700000000040000012c
+  }
+  port=y
+  {
+    id=38
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=width
+  {
+    id=39
+    any_data=value:000000056c6f6e6700000000040000000a
+  }
+  port=height
+  {
+    id=40
+    any_data=value:000000056c6f6e6700000000040000000a
+  }
+  port=visible
+  {
+    id=41
+    any_data=value:00000008626f6f6c65616e000000000101
+  }
+  port=text
+  {
+    id=42
+    string_data=DETUNE
+  }
+  port=color
+  {
+    id=43
+    string_data=orange
+  }
+  port=min
+  {
+    id=44
+    audio_data=1.00000
+  }
+  port=max
+  {
+    id=45
+    audio_data=1.02000
+  }
+  port=value
+  {
+    id=46
+  }
+}
+structureport
+{
+  name=parent
+  x=2
+  y=1
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=47
+  }
+}
+structureport
+{
+  name=x
+  x=3
+  y=1
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=property
+  }
+  data
+  {
+    id=48
+  }
+}
+structureport
+{
+  name=y
+  x=4
+  y=1
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=property
+  }
+  data
+  {
+    id=49
+  }
+}
+structureport
+{
+  name=cutoff
+  x=5
+  y=5
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=50
+  }
+}
+structureport
+{
+  name=resonance
+  x=5
+  y=8
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=51
+  }
+}
+structureport
+{
+  name=detune
+  x=5
+  y=11
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=52
+  }
+}
diff --git a/arts/examples/instrument_neworgan.arts b/arts/examples/instrument_neworgan.arts
new file mode 100644
index 00000000..7bdbc316
--- /dev/null
+++ b/arts/examples/instrument_neworgan.arts
@@ -0,0 +1,532 @@
+name=instrument_neworgan
+module=Arts::Synth_FREQUENCY
+{
+  id=4
+  x=1
+  y=4
+  port=frequency
+  {
+    id=5
+    connect_to=93
+  }
+  port=pos
+  {
+    id=6
+    connect_to=23
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=7
+  x=3
+  y=14
+  port=active
+  {
+    id=8
+    connect_to=95
+  }
+  port=invalue
+  {
+    id=9
+    connect_to=70
+  }
+  port=attack
+  {
+    id=10
+    audio_data=0.03000
+  }
+  port=decay
+  {
+    id=11
+    audio_data=0.10000
+  }
+  port=sustain
+  {
+    id=12
+    audio_data=0.60000
+  }
+  port=release
+  {
+    id=13
+    audio_data=0.30000
+  }
+  port=outvalue
+  {
+    id=14
+    connect_to=20
+    connect_to=21
+    connect_to=90
+    connect_to=91
+  }
+  port=done
+  {
+    id=15
+    connect_to=17
+    connect_to=92
+  }
+}
+module=Arts::Synth_WAVE_SQUARE
+{
+  id=22
+  x=1
+  y=6
+  port=pos
+  {
+    id=23
+    connect_to=6
+  }
+  port=outvalue
+  {
+    id=24
+    connect_to=64
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=25
+  x=5
+  y=2
+  port=invalue1
+  {
+    id=26
+    connect_to=93
+  }
+  port=invalue2
+  {
+    id=27
+    audio_data=1.00000
+  }
+  port=outvalue
+  {
+    id=28
+    connect_to=47
+  }
+}
+module=Arts::Synth_WAVE_SQUARE
+{
+  id=29
+  x=5
+  y=6
+  port=pos
+  {
+    id=30
+    connect_to=48
+  }
+  port=outvalue
+  {
+    id=31
+    connect_to=65
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=32
+  x=9
+  y=2
+  port=invalue1
+  {
+    id=33
+    connect_to=93
+  }
+  port=invalue2
+  {
+    id=34
+    audio_data=8.00000
+  }
+  port=outvalue
+  {
+    id=35
+    connect_to=50
+  }
+}
+module=Arts::Synth_WAVE_SQUARE
+{
+  id=36
+  x=9
+  y=6
+  port=pos
+  {
+    id=37
+    connect_to=51
+  }
+  port=outvalue
+  {
+    id=38
+    connect_to=57
+  }
+}
+module=Arts::Synth_WAVE_SQUARE
+{
+  id=39
+  x=13
+  y=6
+  port=pos
+  {
+    id=40
+    connect_to=54
+  }
+  port=outvalue
+  {
+    id=41
+    connect_to=61
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=42
+  x=13
+  y=2
+  port=invalue1
+  {
+    id=43
+    connect_to=93
+  }
+  port=invalue2
+  {
+    id=44
+    audio_data=2.00000
+  }
+  port=outvalue
+  {
+    id=45
+    connect_to=53
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=46
+  x=5
+  y=4
+  port=frequency
+  {
+    id=47
+    connect_to=28
+  }
+  port=pos
+  {
+    id=48
+    connect_to=30
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=49
+  x=9
+  y=4
+  port=frequency
+  {
+    id=50
+    connect_to=35
+  }
+  port=pos
+  {
+    id=51
+    connect_to=37
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=52
+  x=13
+  y=4
+  port=frequency
+  {
+    id=53
+    connect_to=45
+  }
+  port=pos
+  {
+    id=54
+    connect_to=40
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=55
+  x=5
+  y=10
+  port=invalue1
+  {
+    id=56
+    connect_to=66
+  }
+  port=invalue2
+  {
+    id=57
+    connect_to=38
+  }
+  port=outvalue
+  {
+    id=58
+    connect_to=60
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=59
+  x=9
+  y=11
+  port=invalue1
+  {
+    id=60
+    connect_to=58
+  }
+  port=invalue2
+  {
+    id=61
+    connect_to=41
+  }
+  port=outvalue
+  {
+    id=62
+    connect_to=86
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=63
+  x=1
+  y=9
+  port=invalue1
+  {
+    id=64
+    connect_to=24
+  }
+  port=invalue2
+  {
+    id=65
+    connect_to=31
+  }
+  port=outvalue
+  {
+    id=66
+    connect_to=56
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=67
+  x=13
+  y=13
+  port=invalue1
+  {
+    id=68
+    connect_to=74
+  }
+  port=invalue2
+  {
+    id=69
+    audio_data=0.20000
+  }
+  port=outvalue
+  {
+    id=70
+    connect_to=9
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=71
+  x=13
+  y=11
+  port=invalue
+  {
+    id=72
+    connect_to=88
+  }
+  port=frequency
+  {
+    id=73
+    audio_data=5000.00000
+  }
+  port=outvalue
+  {
+    id=74
+    connect_to=68
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=75
+  x=17
+  y=2
+  port=invalue1
+  {
+    id=76
+    connect_to=93
+  }
+  port=invalue2
+  {
+    id=77
+    audio_data=4.00000
+  }
+  port=outvalue
+  {
+    id=78
+    connect_to=80
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=79
+  x=17
+  y=4
+  port=frequency
+  {
+    id=80
+    connect_to=78
+  }
+  port=pos
+  {
+    id=81
+    connect_to=83
+  }
+}
+module=Arts::Synth_WAVE_SQUARE
+{
+  id=82
+  x=17
+  y=6
+  port=pos
+  {
+    id=83
+    connect_to=81
+  }
+  port=outvalue
+  {
+    id=84
+    connect_to=87
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=85
+  x=17
+  y=9
+  port=invalue1
+  {
+    id=86
+    connect_to=62
+  }
+  port=invalue2
+  {
+    id=87
+    connect_to=84
+  }
+  port=outvalue
+  {
+    id=88
+    connect_to=72
+  }
+}
+structureport
+{
+  name=left
+  x=1
+  y=16
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=90
+    connect_to=14
+  }
+}
+structureport
+{
+  name=right
+  x=3
+  y=16
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=91
+    connect_to=14
+  }
+}
+structureport
+{
+  name=done
+  x=5
+  y=16
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=92
+    connect_to=15
+  }
+}
+structureport
+{
+  name=frequency
+  x=2
+  y=0
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=93
+    connect_to=5
+    connect_to=26
+    connect_to=33
+    connect_to=43
+    connect_to=76
+  }
+}
+structureport
+{
+  name=velocity
+  x=4
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=94
+  }
+}
+structureport
+{
+  name=pressed
+  x=6
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=95
+    connect_to=8
+  }
+}
diff --git a/arts/examples/instrument_nokind.arts b/arts/examples/instrument_nokind.arts
new file mode 100644
index 00000000..d0c78585
--- /dev/null
+++ b/arts/examples/instrument_nokind.arts
@@ -0,0 +1,503 @@
+name=instrument_nokind
+module=Arts::Synth_FREQUENCY
+{
+  id=0
+  x=1
+  y=2
+  port=frequency
+  {
+    id=1
+    connect_to=77
+  }
+  port=pos
+  {
+    id=2
+    connect_to=13
+    connect_to=64
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=3
+  x=3
+  y=9
+  port=active
+  {
+    id=4
+    connect_to=79
+  }
+  port=invalue
+  {
+    id=5
+    connect_to=73
+  }
+  port=attack
+  {
+    id=6
+    audio_data=0.03000
+  }
+  port=decay
+  {
+    id=7
+    audio_data=0.10000
+  }
+  port=sustain
+  {
+    id=8
+    audio_data=0.60000
+  }
+  port=release
+  {
+    id=9
+    audio_data=0.30000
+  }
+  port=outvalue
+  {
+    id=10
+    connect_to=74
+    connect_to=75
+  }
+  port=done
+  {
+    id=11
+    connect_to=76
+  }
+}
+module=Arts::Synth_WAVE_SQUARE
+{
+  id=12
+  x=1
+  y=4
+  port=pos
+  {
+    id=13
+    connect_to=2
+  }
+  port=outvalue
+  {
+    id=14
+    connect_to=16
+    connect_to=21
+    connect_to=28
+    connect_to=52
+    connect_to=56
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=15
+  x=6
+  y=6
+  port=invalue1
+  {
+    id=16
+    connect_to=14
+  }
+  port=invalue2
+  {
+    id=17
+    connect_to=38
+  }
+  port=outvalue
+  {
+    id=18
+    connect_to=24
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=19
+  x=14
+  y=6
+  port=invalue1
+  {
+    id=20
+    connect_to=26
+  }
+  port=invalue2
+  {
+    id=21
+    connect_to=14
+  }
+  port=outvalue
+  {
+    id=22
+    connect_to=48
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=23
+  x=10
+  y=6
+  port=invalue1
+  {
+    id=24
+    connect_to=18
+  }
+  port=invalue2
+  {
+    id=25
+    connect_to=42
+  }
+  port=outvalue
+  {
+    id=26
+    connect_to=20
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=27
+  x=6
+  y=2
+  port=invalue1
+  {
+    id=28
+    connect_to=14
+  }
+  port=invalue2
+  {
+    id=29
+    audio_data=2.00000
+  }
+  port=outvalue
+  {
+    id=30
+    connect_to=32
+    connect_to=36
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=31
+  x=10
+  y=2
+  port=invalue1
+  {
+    id=32
+    connect_to=30
+  }
+  port=invalue2
+  {
+    id=33
+    audio_data=16.00000
+  }
+  port=outvalue
+  {
+    id=34
+    connect_to=40
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=35
+  x=6
+  y=4
+  port=invalue
+  {
+    id=36
+    connect_to=30
+  }
+  port=frequency
+  {
+    id=37
+    audio_data=6000.00000
+  }
+  port=outvalue
+  {
+    id=38
+    connect_to=17
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=39
+  x=10
+  y=4
+  port=invalue
+  {
+    id=40
+    connect_to=34
+  }
+  port=frequency
+  {
+    id=41
+    audio_data=7000.00000
+  }
+  port=outvalue
+  {
+    id=42
+    connect_to=25
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=43
+  x=15
+  y=11
+  port=invalue
+  {
+    id=44
+    connect_to=54
+  }
+  port=frequency
+  {
+    id=45
+    audio_data=8000.00000
+  }
+  port=outvalue
+  {
+    id=46
+    connect_to=60
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=47
+  x=15
+  y=7
+  port=invalue1
+  {
+    id=48
+    connect_to=22
+  }
+  port=invalue2
+  {
+    id=49
+    audio_data=0.10000
+  }
+  port=outvalue
+  {
+    id=50
+    connect_to=53
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=51
+  x=15
+  y=9
+  port=invalue1
+  {
+    id=52
+    connect_to=14
+  }
+  port=invalue2
+  {
+    id=53
+    connect_to=50
+  }
+  port=outvalue
+  {
+    id=54
+    connect_to=44
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=55
+  x=11
+  y=13
+  port=invalue1
+  {
+    id=56
+    connect_to=14
+  }
+  port=invalue2
+  {
+    id=57
+    connect_to=62
+  }
+  port=outvalue
+  {
+    id=58
+    connect_to=68
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=59
+  x=15
+  y=13
+  port=invalue1
+  {
+    id=60
+    connect_to=46
+  }
+  port=invalue2
+  {
+    id=61
+    audio_data=0.50000
+  }
+  port=outvalue
+  {
+    id=62
+    connect_to=57
+  }
+}
+module=Arts::Synth_WAVE_TRI
+{
+  id=63
+  x=1
+  y=7
+  port=pos
+  {
+    id=64
+    connect_to=2
+  }
+  port=outvalue
+  {
+    id=65
+    connect_to=67
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=66
+  x=11
+  y=11
+  port=invalue1
+  {
+    id=67
+    connect_to=65
+  }
+  port=invalue2
+  {
+    id=68
+    connect_to=58
+  }
+  port=outvalue
+  {
+    id=69
+    connect_to=71
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=70
+  x=11
+  y=9
+  port=invalue1
+  {
+    id=71
+    connect_to=69
+  }
+  port=invalue2
+  {
+    id=72
+    audio_data=0.25000
+  }
+  port=outvalue
+  {
+    id=73
+    connect_to=5
+  }
+}
+structureport
+{
+  name=left
+  x=1
+  y=13
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=74
+    connect_to=10
+  }
+}
+structureport
+{
+  name=right
+  x=3
+  y=13
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=75
+    connect_to=10
+  }
+}
+structureport
+{
+  name=done
+  x=5
+  y=13
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=76
+    connect_to=11
+  }
+}
+structureport
+{
+  name=frequency
+  x=2
+  y=0
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=77
+    connect_to=1
+  }
+}
+structureport
+{
+  name=velocity
+  x=4
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=78
+  }
+}
+structureport
+{
+  name=pressed
+  x=6
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=79
+    connect_to=4
+  }
+}
diff --git a/arts/examples/instrument_organ2.arts b/arts/examples/instrument_organ2.arts
new file mode 100644
index 00000000..85fb1271
--- /dev/null
+++ b/arts/examples/instrument_organ2.arts
@@ -0,0 +1,532 @@
+name=instrument_organ2
+module=Arts::Synth_FREQUENCY
+{
+  id=4
+  x=1
+  y=4
+  port=frequency
+  {
+    id=5
+    connect_to=93
+  }
+  port=pos
+  {
+    id=6
+    connect_to=23
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=7
+  x=3
+  y=14
+  port=active
+  {
+    id=8
+    connect_to=95
+  }
+  port=invalue
+  {
+    id=9
+    connect_to=70
+  }
+  port=attack
+  {
+    id=10
+    audio_data=0.03000
+  }
+  port=decay
+  {
+    id=11
+    audio_data=0.10000
+  }
+  port=sustain
+  {
+    id=12
+    audio_data=0.60000
+  }
+  port=release
+  {
+    id=13
+    audio_data=0.30000
+  }
+  port=outvalue
+  {
+    id=14
+    connect_to=20
+    connect_to=21
+    connect_to=90
+    connect_to=91
+  }
+  port=done
+  {
+    id=15
+    connect_to=17
+    connect_to=92
+  }
+}
+module=Arts::Synth_WAVE_SQUARE
+{
+  id=22
+  x=1
+  y=6
+  port=pos
+  {
+    id=23
+    connect_to=6
+  }
+  port=outvalue
+  {
+    id=24
+    connect_to=64
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=25
+  x=5
+  y=2
+  port=invalue1
+  {
+    id=26
+    connect_to=93
+  }
+  port=invalue2
+  {
+    id=27
+    audio_data=1.00000
+  }
+  port=outvalue
+  {
+    id=28
+    connect_to=47
+  }
+}
+module=Arts::Synth_WAVE_SQUARE
+{
+  id=29
+  x=5
+  y=6
+  port=pos
+  {
+    id=30
+    connect_to=48
+  }
+  port=outvalue
+  {
+    id=31
+    connect_to=65
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=32
+  x=9
+  y=2
+  port=invalue1
+  {
+    id=33
+    connect_to=93
+  }
+  port=invalue2
+  {
+    id=34
+    audio_data=8.00000
+  }
+  port=outvalue
+  {
+    id=35
+    connect_to=50
+  }
+}
+module=Arts::Synth_WAVE_SQUARE
+{
+  id=36
+  x=9
+  y=6
+  port=pos
+  {
+    id=37
+    connect_to=51
+  }
+  port=outvalue
+  {
+    id=38
+    connect_to=57
+  }
+}
+module=Arts::Synth_WAVE_SQUARE
+{
+  id=39
+  x=13
+  y=6
+  port=pos
+  {
+    id=40
+    connect_to=54
+  }
+  port=outvalue
+  {
+    id=41
+    connect_to=61
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=42
+  x=13
+  y=2
+  port=invalue1
+  {
+    id=43
+    connect_to=93
+  }
+  port=invalue2
+  {
+    id=44
+    audio_data=2.00000
+  }
+  port=outvalue
+  {
+    id=45
+    connect_to=53
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=46
+  x=5
+  y=4
+  port=frequency
+  {
+    id=47
+    connect_to=28
+  }
+  port=pos
+  {
+    id=48
+    connect_to=30
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=49
+  x=9
+  y=4
+  port=frequency
+  {
+    id=50
+    connect_to=35
+  }
+  port=pos
+  {
+    id=51
+    connect_to=37
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=52
+  x=13
+  y=4
+  port=frequency
+  {
+    id=53
+    connect_to=45
+  }
+  port=pos
+  {
+    id=54
+    connect_to=40
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=55
+  x=5
+  y=10
+  port=invalue1
+  {
+    id=56
+    connect_to=66
+  }
+  port=invalue2
+  {
+    id=57
+    connect_to=38
+  }
+  port=outvalue
+  {
+    id=58
+    connect_to=60
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=59
+  x=9
+  y=11
+  port=invalue1
+  {
+    id=60
+    connect_to=58
+  }
+  port=invalue2
+  {
+    id=61
+    connect_to=41
+  }
+  port=outvalue
+  {
+    id=62
+    connect_to=86
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=63
+  x=1
+  y=9
+  port=invalue1
+  {
+    id=64
+    connect_to=24
+  }
+  port=invalue2
+  {
+    id=65
+    connect_to=31
+  }
+  port=outvalue
+  {
+    id=66
+    connect_to=56
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=67
+  x=13
+  y=13
+  port=invalue1
+  {
+    id=68
+    connect_to=74
+  }
+  port=invalue2
+  {
+    id=69
+    audio_data=0.20000
+  }
+  port=outvalue
+  {
+    id=70
+    connect_to=9
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=71
+  x=13
+  y=11
+  port=invalue
+  {
+    id=72
+    connect_to=88
+  }
+  port=frequency
+  {
+    id=73
+    audio_data=5000.00000
+  }
+  port=outvalue
+  {
+    id=74
+    connect_to=68
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=75
+  x=17
+  y=2
+  port=invalue1
+  {
+    id=76
+    connect_to=93
+  }
+  port=invalue2
+  {
+    id=77
+    audio_data=4.00000
+  }
+  port=outvalue
+  {
+    id=78
+    connect_to=80
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=79
+  x=17
+  y=4
+  port=frequency
+  {
+    id=80
+    connect_to=78
+  }
+  port=pos
+  {
+    id=81
+    connect_to=83
+  }
+}
+module=Arts::Synth_WAVE_SQUARE
+{
+  id=82
+  x=17
+  y=6
+  port=pos
+  {
+    id=83
+    connect_to=81
+  }
+  port=outvalue
+  {
+    id=84
+    connect_to=87
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=85
+  x=17
+  y=9
+  port=invalue1
+  {
+    id=86
+    connect_to=62
+  }
+  port=invalue2
+  {
+    id=87
+    connect_to=84
+  }
+  port=outvalue
+  {
+    id=88
+    connect_to=72
+  }
+}
+structureport
+{
+  name=left
+  x=1
+  y=16
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=90
+    connect_to=14
+  }
+}
+structureport
+{
+  name=right
+  x=3
+  y=16
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=91
+    connect_to=14
+  }
+}
+structureport
+{
+  name=done
+  x=5
+  y=16
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=92
+    connect_to=15
+  }
+}
+structureport
+{
+  name=frequency
+  x=1
+  y=0
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=93
+    connect_to=5
+    connect_to=26
+    connect_to=33
+    connect_to=43
+    connect_to=76
+  }
+}
+structureport
+{
+  name=velocity
+  x=3
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=94
+  }
+}
+structureport
+{
+  name=pressed
+  x=5
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=95
+    connect_to=8
+  }
+}
diff --git a/arts/examples/instrument_simple_sin.arts b/arts/examples/instrument_simple_sin.arts
new file mode 100644
index 00000000..e2725a8f
--- /dev/null
+++ b/arts/examples/instrument_simple_sin.arts
@@ -0,0 +1,190 @@
+name=instrument_simple_sin
+module=Arts::Synth_FREQUENCY
+{
+  id=4
+  x=1
+  y=2
+  port=frequency
+  {
+    id=5
+    connect_to=29
+  }
+  port=pos
+  {
+    id=6
+    connect_to=8
+  }
+}
+module=Arts::Synth_WAVE_SIN
+{
+  id=7
+  x=2
+  y=3
+  port=pos
+  {
+    id=8
+    connect_to=6
+  }
+  port=outvalue
+  {
+    id=9
+    connect_to=12
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=10
+  x=2
+  y=5
+  port=active
+  {
+    id=11
+    connect_to=31
+  }
+  port=invalue
+  {
+    id=12
+    connect_to=9
+  }
+  port=attack
+  {
+    id=13
+    audio_data=0.03000
+  }
+  port=decay
+  {
+    id=14
+    audio_data=0.10000
+  }
+  port=sustain
+  {
+    id=15
+    audio_data=0.60000
+  }
+  port=release
+  {
+    id=16
+    audio_data=0.20000
+  }
+  port=outvalue
+  {
+    id=17
+    connect_to=23
+    connect_to=24
+    connect_to=26
+    connect_to=27
+  }
+  port=done
+  {
+    id=18
+    connect_to=20
+    connect_to=28
+  }
+}
+structureport
+{
+  name=left
+  x=1
+  y=7
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=26
+    connect_to=17
+  }
+}
+structureport
+{
+  name=right
+  x=3
+  y=7
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=27
+    connect_to=17
+  }
+}
+structureport
+{
+  name=done
+  x=5
+  y=7
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=28
+    connect_to=18
+  }
+}
+structureport
+{
+  name=frequency
+  x=1
+  y=0
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=29
+    connect_to=5
+  }
+}
+structureport
+{
+  name=velocity
+  x=3
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=30
+  }
+}
+structureport
+{
+  name=pressed
+  x=5
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=31
+    connect_to=11
+  }
+}
diff --git a/arts/examples/instrument_simple_square.arts b/arts/examples/instrument_simple_square.arts
new file mode 100644
index 00000000..d82297e3
--- /dev/null
+++ b/arts/examples/instrument_simple_square.arts
@@ -0,0 +1,190 @@
+name=instrument_simple_square
+module=Arts::Synth_FREQUENCY
+{
+  id=4
+  x=1
+  y=2
+  port=frequency
+  {
+    id=5
+    connect_to=29
+  }
+  port=pos
+  {
+    id=6
+    connect_to=23
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=7
+  x=3
+  y=6
+  port=active
+  {
+    id=8
+    connect_to=31
+  }
+  port=invalue
+  {
+    id=9
+    connect_to=24
+  }
+  port=attack
+  {
+    id=10
+    audio_data=0.03000
+  }
+  port=decay
+  {
+    id=11
+    audio_data=0.10000
+  }
+  port=sustain
+  {
+    id=12
+    audio_data=0.60000
+  }
+  port=release
+  {
+    id=13
+    audio_data=0.20000
+  }
+  port=outvalue
+  {
+    id=14
+    connect_to=20
+    connect_to=21
+    connect_to=26
+    connect_to=27
+  }
+  port=done
+  {
+    id=15
+    connect_to=17
+    connect_to=28
+  }
+}
+module=Arts::Synth_WAVE_SQUARE
+{
+  id=22
+  x=1
+  y=4
+  port=pos
+  {
+    id=23
+    connect_to=6
+  }
+  port=outvalue
+  {
+    id=24
+    connect_to=9
+  }
+}
+structureport
+{
+  name=left
+  x=1
+  y=8
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=26
+    connect_to=14
+  }
+}
+structureport
+{
+  name=right
+  x=3
+  y=8
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=27
+    connect_to=14
+  }
+}
+structureport
+{
+  name=done
+  x=5
+  y=8
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=28
+    connect_to=15
+  }
+}
+structureport
+{
+  name=frequency
+  x=1
+  y=0
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=29
+    connect_to=5
+  }
+}
+structureport
+{
+  name=velocity
+  x=3
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=30
+  }
+}
+structureport
+{
+  name=pressed
+  x=5
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=31
+    connect_to=8
+  }
+}
diff --git a/arts/examples/instrument_simple_tri.arts b/arts/examples/instrument_simple_tri.arts
new file mode 100644
index 00000000..05453b8b
--- /dev/null
+++ b/arts/examples/instrument_simple_tri.arts
@@ -0,0 +1,304 @@
+name=instrument_simple_tri
+module=Arts::Synth_FREQUENCY
+{
+  id=0
+  x=0
+  y=2
+  port=frequency
+  {
+    id=1
+    connect_to=36
+  }
+  port=pos
+  {
+    id=2
+    connect_to=13
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=3
+  x=4
+  y=9
+  port=active
+  {
+    id=4
+    connect_to=38
+  }
+  port=invalue
+  {
+    id=5
+    connect_to=46
+  }
+  port=attack
+  {
+    id=6
+    audio_data=0.03000
+  }
+  port=decay
+  {
+    id=7
+    audio_data=0.10000
+  }
+  port=sustain
+  {
+    id=8
+    audio_data=0.60000
+  }
+  port=release
+  {
+    id=9
+    audio_data=0.20000
+  }
+  port=outvalue
+  {
+    id=10
+    connect_to=33
+    connect_to=34
+  }
+  port=done
+  {
+    id=11
+    connect_to=35
+  }
+}
+module=Arts::Synth_WAVE_TRI
+{
+  id=12
+  x=1
+  y=3
+  port=pos
+  {
+    id=13
+    connect_to=2
+  }
+  port=outvalue
+  {
+    id=14
+    connect_to=26
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=15
+  x=6
+  y=6
+  port=invalue
+  {
+    id=16
+    connect_to=28
+  }
+  port=frequency
+  {
+    id=17
+    audio_data=4000.00000
+  }
+  port=outvalue
+  {
+    id=18
+    connect_to=44
+  }
+}
+module=Arts::Synth_WAVE_TRI
+{
+  id=19
+  x=9
+  y=3
+  port=pos
+  {
+    id=20
+    connect_to=24
+  }
+  port=outvalue
+  {
+    id=21
+    connect_to=27
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=22
+  x=8
+  y=2
+  port=frequency
+  {
+    id=23
+    connect_to=32
+  }
+  port=pos
+  {
+    id=24
+    connect_to=20
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=25
+  x=5
+  y=5
+  port=invalue1
+  {
+    id=26
+    connect_to=14
+  }
+  port=invalue2
+  {
+    id=27
+    connect_to=21
+  }
+  port=outvalue
+  {
+    id=28
+    connect_to=16
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=29
+  x=7
+  y=1
+  port=invalue1
+  {
+    id=30
+    connect_to=36
+  }
+  port=invalue2
+  {
+    id=31
+    audio_data=1.01000
+  }
+  port=outvalue
+  {
+    id=32
+    connect_to=23
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=43
+  x=7
+  y=7
+  port=invalue1
+  {
+    id=44
+    connect_to=18
+  }
+  port=invalue2
+  {
+    id=45
+    audio_data=0.50000
+  }
+  port=outvalue
+  {
+    id=46
+    connect_to=5
+  }
+}
+structureport
+{
+  name=left
+  x=1
+  y=12
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=33
+    connect_to=10
+  }
+}
+structureport
+{
+  name=right
+  x=3
+  y=12
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=34
+    connect_to=10
+  }
+}
+structureport
+{
+  name=done
+  x=5
+  y=12
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=35
+    connect_to=11
+  }
+}
+structureport
+{
+  name=frequency
+  x=1
+  y=0
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=36
+    connect_to=1
+    connect_to=30
+  }
+}
+structureport
+{
+  name=velocity
+  x=3
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=37
+  }
+}
+structureport
+{
+  name=pressed
+  x=5
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=38
+    connect_to=4
+  }
+}
diff --git a/arts/examples/instrument_slide.arts b/arts/examples/instrument_slide.arts
new file mode 100644
index 00000000..cb2949b0
--- /dev/null
+++ b/arts/examples/instrument_slide.arts
@@ -0,0 +1,464 @@
+name=instrument_slide
+module=Arts::Synth_FREQUENCY
+{
+  id=0
+  x=4
+  y=3
+  port=frequency
+  {
+    id=1
+    connect_to=67
+  }
+  port=pos
+  {
+    id=2
+    connect_to=22
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=3
+  x=12
+  y=3
+  port=active
+  {
+    id=4
+    connect_to=69
+  }
+  port=invalue
+  {
+    id=5
+    connect_to=19
+  }
+  port=attack
+  {
+    id=6
+    audio_data=0.00200
+  }
+  port=decay
+  {
+    id=7
+    audio_data=0.05000
+  }
+  port=sustain
+  {
+    id=8
+    audio_data=0.70000
+  }
+  port=release
+  {
+    id=9
+    audio_data=0.05000
+  }
+  port=outvalue
+  {
+    id=10
+    connect_to=33
+    connect_to=60
+  }
+  port=done
+  {
+    id=11
+    connect_to=70
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=12
+  x=12
+  y=1
+  port=active
+  {
+    id=13
+    connect_to=69
+  }
+  port=invalue
+  {
+    id=14
+    connect_to=68
+  }
+  port=attack
+  {
+    id=15
+    audio_data=0.00200
+  }
+  port=decay
+  {
+    id=16
+    audio_data=2.00000
+  }
+  port=sustain
+  {
+    id=17
+    audio_data=0.00010
+  }
+  port=release
+  {
+    id=18
+    audio_data=0.10000
+  }
+  port=outvalue
+  {
+    id=19
+    connect_to=5
+  }
+  port=done
+  {
+    id=20
+  }
+}
+module=Arts::Synth_WAVE_TRI
+{
+  id=21
+  x=5
+  y=4
+  port=pos
+  {
+    id=22
+    connect_to=2
+  }
+  port=outvalue
+  {
+    id=23
+    connect_to=48
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=24
+  x=5
+  y=11
+  port=invalue
+  {
+    id=25
+    connect_to=50
+  }
+  port=frequency
+  {
+    id=26
+    connect_to=66
+  }
+  port=outvalue
+  {
+    id=27
+    connect_to=29
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=28
+  x=6
+  y=12
+  port=invalue1
+  {
+    id=29
+    connect_to=27
+  }
+  port=invalue2
+  {
+    id=30
+    connect_to=62
+  }
+  port=outvalue
+  {
+    id=31
+    connect_to=71
+    connect_to=72
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=32
+  x=11
+  y=5
+  port=invalue1
+  {
+    id=33
+    connect_to=10
+  }
+  port=invalue2
+  {
+    id=34
+    audio_data=2000.00000
+  }
+  port=outvalue
+  {
+    id=35
+    connect_to=65
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=36
+  x=1
+  y=3
+  port=invalue1
+  {
+    id=37
+    connect_to=67
+  }
+  port=invalue2
+  {
+    id=38
+    audio_data=2.01000
+  }
+  port=outvalue
+  {
+    id=39
+    connect_to=41
+    connect_to=64
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=40
+  x=2
+  y=5
+  port=frequency
+  {
+    id=41
+    connect_to=39
+  }
+  port=pos
+  {
+    id=42
+    connect_to=44
+  }
+}
+module=Arts::Synth_WAVE_TRI
+{
+  id=43
+  x=3
+  y=6
+  port=pos
+  {
+    id=44
+    connect_to=42
+  }
+  port=outvalue
+  {
+    id=45
+    connect_to=47
+  }
+}
+module=Arts::Synth_XFADE
+{
+  id=46
+  x=4
+  y=7
+  port=invalue1
+  {
+    id=47
+    connect_to=45
+  }
+  port=invalue2
+  {
+    id=48
+    connect_to=23
+  }
+  port=percentage
+  {
+    id=49
+    connect_to=58
+  }
+  port=outvalue
+  {
+    id=50
+    connect_to=25
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=51
+  x=7
+  y=3
+  port=invalue1
+  {
+    id=52
+    connect_to=68
+  }
+  port=invalue2
+  {
+    id=53
+    audio_data=2.00000
+  }
+  port=outvalue
+  {
+    id=54
+    connect_to=56
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=55
+  x=8
+  y=4
+  port=invalue1
+  {
+    id=56
+    connect_to=54
+  }
+  port=invalue2
+  {
+    id=57
+    audio_data=-1.00000
+  }
+  port=outvalue
+  {
+    id=58
+    connect_to=49
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=59
+  x=11
+  y=7
+  port=invalue1
+  {
+    id=60
+    connect_to=10
+  }
+  port=invalue2
+  {
+    id=61
+    audio_data=2.00000
+  }
+  port=outvalue
+  {
+    id=62
+    connect_to=30
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=63
+  x=7
+  y=9
+  port=invalue1
+  {
+    id=64
+    connect_to=39
+  }
+  port=invalue2
+  {
+    id=65
+    connect_to=35
+  }
+  port=outvalue
+  {
+    id=66
+    connect_to=26
+  }
+}
+structureport
+{
+  name=frequency
+  x=5
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=67
+    connect_to=1
+    connect_to=37
+  }
+}
+structureport
+{
+  name=velocity
+  x=6
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=68
+    connect_to=14
+    connect_to=52
+  }
+}
+structureport
+{
+  name=pressed
+  x=7
+  y=0
+  position=3
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=69
+    connect_to=4
+    connect_to=13
+  }
+}
+structureport
+{
+  name=done
+  x=15
+  y=14
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=70
+    connect_to=11
+  }
+}
+structureport
+{
+  name=left
+  x=6
+  y=14
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=71
+    connect_to=31
+  }
+}
+structureport
+{
+  name=right
+  x=8
+  y=14
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=72
+    connect_to=31
+  }
+}
diff --git a/arts/examples/instrument_slide1.arts b/arts/examples/instrument_slide1.arts
new file mode 100644
index 00000000..f540e3fa
--- /dev/null
+++ b/arts/examples/instrument_slide1.arts
@@ -0,0 +1,467 @@
+name=instrument_slide1
+module=Arts::Synth_FREQUENCY
+{
+  id=4
+  x=4
+  y=3
+  port=frequency
+  {
+    id=5
+    connect_to=81
+  }
+  port=pos
+  {
+    id=6
+    connect_to=32
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=9
+  x=12
+  y=3
+  port=active
+  {
+    id=10
+    connect_to=83
+  }
+  port=invalue
+  {
+    id=11
+    connect_to=29
+  }
+  port=attack
+  {
+    id=12
+    audio_data=0.00200
+  }
+  port=decay
+  {
+    id=13
+    audio_data=0.05000
+  }
+  port=sustain
+  {
+    id=14
+    audio_data=0.70000
+  }
+  port=release
+  {
+    id=15
+    audio_data=0.05000
+  }
+  port=outvalue
+  {
+    id=16
+    connect_to=43
+    connect_to=70
+  }
+  port=done
+  {
+    id=17
+    connect_to=8
+    connect_to=80
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=22
+  x=12
+  y=1
+  port=active
+  {
+    id=23
+    connect_to=83
+  }
+  port=invalue
+  {
+    id=24
+    connect_to=82
+  }
+  port=attack
+  {
+    id=25
+    audio_data=0.00200
+  }
+  port=decay
+  {
+    id=26
+    audio_data=2.00000
+  }
+  port=sustain
+  {
+    id=27
+    audio_data=0.00010
+  }
+  port=release
+  {
+    id=28
+    audio_data=0.10000
+  }
+  port=outvalue
+  {
+    id=29
+    connect_to=11
+  }
+  port=done
+  {
+    id=30
+  }
+}
+module=Arts::Synth_WAVE_TRI
+{
+  id=31
+  x=5
+  y=4
+  port=pos
+  {
+    id=32
+    connect_to=6
+  }
+  port=outvalue
+  {
+    id=33
+    connect_to=58
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=34
+  x=5
+  y=11
+  port=invalue
+  {
+    id=35
+    connect_to=60
+  }
+  port=frequency
+  {
+    id=36
+    connect_to=76
+  }
+  port=outvalue
+  {
+    id=37
+    connect_to=39
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=38
+  x=6
+  y=12
+  port=invalue1
+  {
+    id=39
+    connect_to=37
+  }
+  port=invalue2
+  {
+    id=40
+    connect_to=72
+  }
+  port=outvalue
+  {
+    id=41
+    connect_to=20
+    connect_to=21
+    connect_to=78
+    connect_to=79
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=42
+  x=11
+  y=5
+  port=invalue1
+  {
+    id=43
+    connect_to=16
+  }
+  port=invalue2
+  {
+    id=44
+    audio_data=2000.00000
+  }
+  port=outvalue
+  {
+    id=45
+    connect_to=75
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=46
+  x=1
+  y=3
+  port=invalue1
+  {
+    id=47
+    connect_to=81
+  }
+  port=invalue2
+  {
+    id=48
+    audio_data=2.01000
+  }
+  port=outvalue
+  {
+    id=49
+    connect_to=51
+    connect_to=74
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=50
+  x=2
+  y=5
+  port=frequency
+  {
+    id=51
+    connect_to=49
+  }
+  port=pos
+  {
+    id=52
+    connect_to=54
+  }
+}
+module=Arts::Synth_WAVE_TRI
+{
+  id=53
+  x=3
+  y=6
+  port=pos
+  {
+    id=54
+    connect_to=52
+  }
+  port=outvalue
+  {
+    id=55
+    connect_to=57
+  }
+}
+module=Arts::Synth_XFADE
+{
+  id=56
+  x=4
+  y=7
+  port=invalue1
+  {
+    id=57
+    connect_to=55
+  }
+  port=invalue2
+  {
+    id=58
+    connect_to=33
+  }
+  port=percentage
+  {
+    id=59
+    connect_to=68
+  }
+  port=outvalue
+  {
+    id=60
+    connect_to=35
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=61
+  x=7
+  y=3
+  port=invalue1
+  {
+    id=62
+    connect_to=82
+  }
+  port=invalue2
+  {
+    id=63
+    audio_data=2.00000
+  }
+  port=outvalue
+  {
+    id=64
+    connect_to=66
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=65
+  x=8
+  y=4
+  port=invalue1
+  {
+    id=66
+    connect_to=64
+  }
+  port=invalue2
+  {
+    id=67
+    audio_data=-1.00000
+  }
+  port=outvalue
+  {
+    id=68
+    connect_to=59
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=69
+  x=11
+  y=7
+  port=invalue1
+  {
+    id=70
+    connect_to=16
+  }
+  port=invalue2
+  {
+    id=71
+    audio_data=2.00000
+  }
+  port=outvalue
+  {
+    id=72
+    connect_to=40
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=73
+  x=7
+  y=9
+  port=invalue1
+  {
+    id=74
+    connect_to=49
+  }
+  port=invalue2
+  {
+    id=75
+    connect_to=45
+  }
+  port=outvalue
+  {
+    id=76
+    connect_to=36
+  }
+}
+structureport
+{
+  name=left
+  x=1
+  y=14
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=78
+    connect_to=41
+  }
+}
+structureport
+{
+  name=right
+  x=3
+  y=14
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=79
+    connect_to=41
+  }
+}
+structureport
+{
+  name=done
+  x=5
+  y=14
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=80
+    connect_to=17
+  }
+}
+structureport
+{
+  name=frequency
+  x=0
+  y=0
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=81
+    connect_to=47
+    connect_to=5
+  }
+}
+structureport
+{
+  name=velocity
+  x=2
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=82
+    connect_to=62
+    connect_to=24
+  }
+}
+structureport
+{
+  name=pressed
+  x=4
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=83
+    connect_to=23
+    connect_to=10
+  }
+}
diff --git a/arts/examples/instrument_square.arts b/arts/examples/instrument_square.arts
new file mode 100644
index 00000000..13d1e6ed
--- /dev/null
+++ b/arts/examples/instrument_square.arts
@@ -0,0 +1,465 @@
+name=instrument_square
+module=Arts::Synth_FREQUENCY
+{
+  id=0
+  x=1
+  y=2
+  port=frequency
+  {
+    id=1
+    connect_to=63
+  }
+  port=pos
+  {
+    id=2
+    connect_to=13
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=3
+  x=0
+  y=9
+  port=active
+  {
+    id=4
+    connect_to=65
+  }
+  port=invalue
+  {
+    id=5
+    connect_to=76
+  }
+  port=attack
+  {
+    id=6
+    audio_data=0.03000
+  }
+  port=decay
+  {
+    id=7
+    audio_data=0.10000
+  }
+  port=sustain
+  {
+    id=8
+    audio_data=0.60000
+  }
+  port=release
+  {
+    id=9
+    audio_data=0.30000
+  }
+  port=outvalue
+  {
+    id=10
+    connect_to=66
+    connect_to=67
+  }
+  port=done
+  {
+    id=11
+    connect_to=68
+  }
+}
+module=Arts::Synth_WAVE_SQUARE
+{
+  id=12
+  x=1
+  y=4
+  port=pos
+  {
+    id=13
+    connect_to=2
+  }
+  port=outvalue
+  {
+    id=14
+    connect_to=16
+    connect_to=21
+    connect_to=28
+    connect_to=52
+    connect_to=56
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=15
+  x=6
+  y=6
+  port=invalue1
+  {
+    id=16
+    connect_to=14
+  }
+  port=invalue2
+  {
+    id=17
+    connect_to=38
+  }
+  port=outvalue
+  {
+    id=18
+    connect_to=24
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=19
+  x=15
+  y=6
+  port=invalue1
+  {
+    id=20
+    connect_to=26
+  }
+  port=invalue2
+  {
+    id=21
+    connect_to=14
+  }
+  port=outvalue
+  {
+    id=22
+    connect_to=48
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=23
+  x=10
+  y=6
+  port=invalue1
+  {
+    id=24
+    connect_to=18
+  }
+  port=invalue2
+  {
+    id=25
+    connect_to=42
+  }
+  port=outvalue
+  {
+    id=26
+    connect_to=20
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=27
+  x=6
+  y=2
+  port=invalue1
+  {
+    id=28
+    connect_to=14
+  }
+  port=invalue2
+  {
+    id=29
+    audio_data=2.00000
+  }
+  port=outvalue
+  {
+    id=30
+    connect_to=32
+    connect_to=36
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=31
+  x=10
+  y=2
+  port=invalue1
+  {
+    id=32
+    connect_to=30
+  }
+  port=invalue2
+  {
+    id=33
+    audio_data=16.00000
+  }
+  port=outvalue
+  {
+    id=34
+    connect_to=40
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=35
+  x=6
+  y=4
+  port=invalue
+  {
+    id=36
+    connect_to=30
+  }
+  port=frequency
+  {
+    id=37
+    audio_data=6000.00000
+  }
+  port=outvalue
+  {
+    id=38
+    connect_to=17
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=39
+  x=10
+  y=4
+  port=invalue
+  {
+    id=40
+    connect_to=34
+  }
+  port=frequency
+  {
+    id=41
+    audio_data=2000.00000
+  }
+  port=outvalue
+  {
+    id=42
+    connect_to=25
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=43
+  x=12
+  y=9
+  port=invalue
+  {
+    id=44
+    connect_to=54
+  }
+  port=frequency
+  {
+    id=45
+    audio_data=8000.00000
+  }
+  port=outvalue
+  {
+    id=46
+    connect_to=60
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=47
+  x=16
+  y=7
+  port=invalue1
+  {
+    id=48
+    connect_to=22
+  }
+  port=invalue2
+  {
+    id=49
+    audio_data=0.10000
+  }
+  port=outvalue
+  {
+    id=50
+    connect_to=53
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=51
+  x=16
+  y=9
+  port=invalue1
+  {
+    id=52
+    connect_to=14
+  }
+  port=invalue2
+  {
+    id=53
+    connect_to=50
+  }
+  port=outvalue
+  {
+    id=54
+    connect_to=44
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=55
+  x=8
+  y=11
+  port=invalue1
+  {
+    id=56
+    connect_to=14
+  }
+  port=invalue2
+  {
+    id=57
+    connect_to=62
+  }
+  port=outvalue
+  {
+    id=58
+    connect_to=75
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=59
+  x=8
+  y=9
+  port=invalue1
+  {
+    id=60
+    connect_to=46
+  }
+  port=invalue2
+  {
+    id=61
+    audio_data=0.50000
+  }
+  port=outvalue
+  {
+    id=62
+    connect_to=57
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=73
+  x=0
+  y=7
+  port=invalue1
+  {
+    id=74
+    audio_data=0.30000
+  }
+  port=invalue2
+  {
+    id=75
+    connect_to=58
+  }
+  port=outvalue
+  {
+    id=76
+    connect_to=5
+  }
+}
+structureport
+{
+  name=frequency
+  x=2
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=63
+    connect_to=1
+  }
+}
+structureport
+{
+  name=velocity
+  x=4
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=64
+  }
+}
+structureport
+{
+  name=pressed
+  x=1
+  y=8
+  position=3
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=65
+    connect_to=4
+  }
+}
+structureport
+{
+  name=left
+  x=2
+  y=11
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=66
+    connect_to=10
+  }
+}
+structureport
+{
+  name=right
+  x=4
+  y=11
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=67
+    connect_to=10
+  }
+}
+structureport
+{
+  name=done
+  x=6
+  y=11
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=68
+    connect_to=11
+  }
+}
diff --git a/arts/examples/instrument_tri.arts b/arts/examples/instrument_tri.arts
new file mode 100644
index 00000000..2d5795a9
--- /dev/null
+++ b/arts/examples/instrument_tri.arts
@@ -0,0 +1,348 @@
+name=instrument_tri
+module=Arts::Synth_FREQUENCY
+{
+  id=0
+  x=1
+  y=2
+  port=frequency
+  {
+    id=1
+    connect_to=44
+  }
+  port=pos
+  {
+    id=2
+    connect_to=13
+  }
+}
+module=Arts::Synth_ENVELOPE_ADSR
+{
+  id=3
+  x=3
+  y=10
+  port=active
+  {
+    id=4
+    connect_to=46
+  }
+  port=invalue
+  {
+    id=5
+    connect_to=54
+  }
+  port=attack
+  {
+    id=6
+    audio_data=0.03000
+  }
+  port=decay
+  {
+    id=7
+    audio_data=0.10000
+  }
+  port=sustain
+  {
+    id=8
+    audio_data=0.60000
+  }
+  port=release
+  {
+    id=9
+    audio_data=0.20000
+  }
+  port=outvalue
+  {
+    id=10
+    connect_to=41
+    connect_to=42
+  }
+  port=done
+  {
+    id=11
+    connect_to=43
+  }
+}
+module=Arts::Synth_WAVE_TRI
+{
+  id=12
+  x=2
+  y=3
+  port=pos
+  {
+    id=13
+    connect_to=2
+  }
+  port=outvalue
+  {
+    id=14
+    connect_to=26
+  }
+}
+module=Arts::Synth_SHELVE_CUTOFF
+{
+  id=15
+  x=6
+  y=7
+  port=invalue
+  {
+    id=16
+    connect_to=28
+  }
+  port=frequency
+  {
+    id=17
+    connect_to=36
+  }
+  port=outvalue
+  {
+    id=18
+    connect_to=53
+  }
+}
+module=Arts::Synth_WAVE_TRI
+{
+  id=19
+  x=9
+  y=4
+  port=pos
+  {
+    id=20
+    connect_to=24
+  }
+  port=outvalue
+  {
+    id=21
+    connect_to=27
+  }
+}
+module=Arts::Synth_FREQUENCY
+{
+  id=22
+  x=8
+  y=3
+  port=frequency
+  {
+    id=23
+    connect_to=32
+  }
+  port=pos
+  {
+    id=24
+    connect_to=20
+  }
+}
+module=Arts::Synth_ADD
+{
+  id=25
+  x=6
+  y=5
+  port=invalue1
+  {
+    id=26
+    connect_to=14
+  }
+  port=invalue2
+  {
+    id=27
+    connect_to=21
+  }
+  port=outvalue
+  {
+    id=28
+    connect_to=16
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=29
+  x=7
+  y=1
+  port=invalue1
+  {
+    id=30
+    connect_to=44
+  }
+  port=invalue2
+  {
+    id=31
+    audio_data=1.01000
+  }
+  port=outvalue
+  {
+    id=32
+    connect_to=23
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=33
+  x=0
+  y=7
+  port=invalue1
+  {
+    id=34
+    connect_to=44
+  }
+  port=invalue2
+  {
+    id=35
+    connect_to=40
+  }
+  port=outvalue
+  {
+    id=36
+    connect_to=17
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=37
+  x=1
+  y=5
+  port=invalue1
+  {
+    id=38
+    audio_data=6.00000
+  }
+  port=invalue2
+  {
+    id=39
+    connect_to=45
+  }
+  port=outvalue
+  {
+    id=40
+    connect_to=35
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=51
+  x=6
+  y=8
+  port=invalue1
+  {
+    id=52
+    audio_data=0.50000
+  }
+  port=invalue2
+  {
+    id=53
+    connect_to=18
+  }
+  port=outvalue
+  {
+    id=54
+    connect_to=5
+  }
+}
+structureport
+{
+  name=left
+  x=2
+  y=12
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=41
+    connect_to=10
+  }
+}
+structureport
+{
+  name=right
+  x=4
+  y=12
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=42
+    connect_to=10
+  }
+}
+structureport
+{
+  name=done
+  x=6
+  y=12
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=43
+    connect_to=11
+  }
+}
+structureport
+{
+  name=frequency
+  x=2
+  y=0
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=44
+    connect_to=1
+    connect_to=30
+    connect_to=34
+  }
+}
+structureport
+{
+  name=velocity
+  x=4
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=45
+    connect_to=39
+  }
+}
+structureport
+{
+  name=pressed
+  x=6
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=46
+    connect_to=4
+  }
+}
diff --git a/arts/examples/mixer_element_eq.arts b/arts/examples/mixer_element_eq.arts
new file mode 100644
index 00000000..6123bb24
--- /dev/null
+++ b/arts/examples/mixer_element_eq.arts
@@ -0,0 +1,567 @@
+name=mixer_element_eq
+module=Arts::Widget
+{
+  id=0
+  x=6
+  y=1
+  port=widgetID
+  {
+    id=1
+  }
+  port=parent
+  {
+    id=2
+  }
+  port=x
+  {
+    id=3
+  }
+  port=y
+  {
+    id=4
+  }
+  port=width
+  {
+    id=5
+  }
+  port=height
+  {
+    id=6
+  }
+  port=visible
+  {
+    id=7
+    any_data=value:00000008626f6f6c65616e000000000101
+  }
+}
+module=Arts::Poti
+{
+  id=8
+  x=0
+  y=3
+  port=widgetID
+  {
+    id=9
+  }
+  port=x
+  {
+    id=11
+  }
+  port=y
+  {
+    id=12
+  }
+  port=width
+  {
+    id=13
+  }
+  port=height
+  {
+    id=14
+  }
+  port=visible
+  {
+    id=15
+  }
+  port=text
+  {
+    id=16
+    string_data=VOLUME
+  }
+  port=color
+  {
+    id=17
+    string_data=red
+  }
+  port=min
+  {
+    id=18
+    audio_data=0.00000
+  }
+  port=max
+  {
+    id=19
+    audio_data=1.00000
+  }
+  port=value
+  {
+    id=20
+  }
+}
+module=Arts::Synth_BUS_DOWNLINK
+{
+  id=21
+  x=8
+  y=4
+  port=busname
+  {
+    id=22
+    connect_to=119
+  }
+  port=left
+  {
+    id=23
+    connect_to=30
+  }
+  port=right
+  {
+    id=24
+    connect_to=34
+  }
+}
+module=Arts::Synth_BUS_UPLINK
+{
+  id=25
+  x=1
+  y=21
+  port=busname
+  {
+    id=26
+    connect_to=118
+  }
+  port=left
+  {
+    id=27
+    connect_to=44
+  }
+  port=right
+  {
+    id=28
+    connect_to=52
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=29
+  x=0
+  y=7
+  port=invalue1
+  {
+    id=30
+    connect_to=23
+  }
+  port=invalue2
+  {
+    id=31
+  }
+  port=outvalue
+  {
+    id=32
+    connect_to=43
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=33
+  x=6
+  y=7
+  port=invalue1
+  {
+    id=34
+    connect_to=24
+  }
+  port=invalue2
+  {
+    id=35
+  }
+  port=outvalue
+  {
+    id=36
+    connect_to=51
+  }
+}
+module=Arts::Synth_STD_EQUALIZER
+{
+  id=37
+  x=0
+  y=17
+  port=low
+  {
+    id=38
+  }
+  port=mid
+  {
+    id=39
+  }
+  port=high
+  {
+    id=40
+  }
+  port=frequency
+  {
+    id=41
+  }
+  port=q
+  {
+    id=42
+  }
+  port=invalue
+  {
+    id=43
+    connect_to=32
+  }
+  port=outvalue
+  {
+    id=44
+    connect_to=27
+  }
+}
+module=Arts::Synth_STD_EQUALIZER
+{
+  id=45
+  x=7
+  y=17
+  port=low
+  {
+    id=46
+  }
+  port=mid
+  {
+    id=47
+  }
+  port=high
+  {
+    id=48
+  }
+  port=frequency
+  {
+    id=49
+  }
+  port=q
+  {
+    id=50
+  }
+  port=invalue
+  {
+    id=51
+    connect_to=36
+  }
+  port=outvalue
+  {
+    id=52
+    connect_to=28
+  }
+}
+module=Arts::Poti
+{
+  id=53
+  x=14
+  y=9
+  port=widgetID
+  {
+    id=54
+  }
+  port=x
+  {
+    id=56
+  }
+  port=y
+  {
+    id=57
+  }
+  port=width
+  {
+    id=58
+  }
+  port=height
+  {
+    id=59
+  }
+  port=visible
+  {
+    id=60
+  }
+  port=text
+  {
+    id=61
+    string_data=MID
+  }
+  port=color
+  {
+    id=62
+    string_data=darkblue
+  }
+  port=min
+  {
+    id=63
+    audio_data=-24.00000
+  }
+  port=max
+  {
+    id=64
+    audio_data=24.00000
+  }
+  port=value
+  {
+    id=65
+  }
+}
+module=Arts::Poti
+{
+  id=66
+  x=14
+  y=11
+  port=widgetID
+  {
+    id=67
+  }
+  port=x
+  {
+    id=69
+  }
+  port=y
+  {
+    id=70
+  }
+  port=width
+  {
+    id=71
+  }
+  port=height
+  {
+    id=72
+  }
+  port=visible
+  {
+    id=73
+  }
+  port=text
+  {
+    id=74
+    string_data=HIGH
+  }
+  port=color
+  {
+    id=75
+    string_data=darkblue
+  }
+  port=min
+  {
+    id=76
+    audio_data=-24.00000
+  }
+  port=max
+  {
+    id=77
+    audio_data=24.00000
+  }
+  port=value
+  {
+    id=78
+  }
+}
+module=Arts::Poti
+{
+  id=79
+  x=14
+  y=7
+  port=widgetID
+  {
+    id=80
+  }
+  port=x
+  {
+    id=82
+  }
+  port=y
+  {
+    id=83
+  }
+  port=width
+  {
+    id=84
+  }
+  port=height
+  {
+    id=85
+  }
+  port=visible
+  {
+    id=86
+  }
+  port=text
+  {
+    id=87
+    string_data=LOW
+  }
+  port=color
+  {
+    id=88
+    string_data=darkblue
+  }
+  port=min
+  {
+    id=89
+    audio_data=-24.00000
+  }
+  port=max
+  {
+    id=90
+    audio_data=24.00000
+  }
+  port=value
+  {
+    id=91
+  }
+}
+module=Arts::Poti
+{
+  id=92
+  x=14
+  y=13
+  port=widgetID
+  {
+    id=93
+  }
+  port=x
+  {
+    id=95
+  }
+  port=y
+  {
+    id=96
+  }
+  port=width
+  {
+    id=97
+  }
+  port=height
+  {
+    id=98
+  }
+  port=visible
+  {
+    id=99
+  }
+  port=text
+  {
+    id=100
+    string_data=FREQUENCY
+  }
+  port=color
+  {
+    id=101
+    string_data=darkgreen
+  }
+  port=min
+  {
+    id=102
+    audio_data=1.00000
+  }
+  port=max
+  {
+    id=103
+    audio_data=5000.00000
+  }
+  port=value
+  {
+    id=104
+  }
+}
+module=Arts::Poti
+{
+  id=105
+  x=14
+  y=15
+  port=widgetID
+  {
+    id=106
+  }
+  port=x
+  {
+    id=108
+  }
+  port=y
+  {
+    id=109
+  }
+  port=width
+  {
+    id=110
+  }
+  port=height
+  {
+    id=111
+  }
+  port=visible
+  {
+    id=112
+  }
+  port=text
+  {
+    id=113
+    string_data=Q
+  }
+  port=color
+  {
+    id=114
+    string_data=darkgreen
+  }
+  port=min
+  {
+    id=115
+    audio_data=0.10000
+  }
+  port=max
+  {
+    id=116
+    audio_data=2.00000
+  }
+  port=value
+  {
+    id=117
+  }
+}
+structureport
+{
+  name=output
+  x=4
+  y=20
+  position=2
+  type
+  {
+    direction=output
+    datatype=string
+    conntype=property
+  }
+  data
+  {
+    id=118
+    connect_to=26
+  }
+}
+structureport
+{
+  name=input
+  x=13
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=string
+    conntype=property
+  }
+  data
+  {
+    id=119
+    connect_to=22
+  }
+}
+structureport
+{
+  name=parent
+  x=7
+  y=0
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=120
+  }
+}
diff --git a/arts/examples/mixer_element_eqfx.arts b/arts/examples/mixer_element_eqfx.arts
new file mode 100644
index 00000000..b7248fcb
--- /dev/null
+++ b/arts/examples/mixer_element_eqfx.arts
@@ -0,0 +1,740 @@
+name=mixer_element_eqfx
+module=Gui_SUB_PANEL
+{
+  id=147
+  x=6
+  y=1
+  port=parent
+  {
+    id=148
+    connect_to=279
+  }
+  port=x
+  {
+    id=149
+    audio_data=0.00000
+  }
+  port=y
+  {
+    id=150
+    audio_data=0.00000
+  }
+  port=width
+  {
+    id=151
+    audio_data=6.50000
+  }
+  port=height
+  {
+    id=152
+    audio_data=32.00000
+  }
+  port=pixmap
+  {
+    id=153
+    string_data=easyblue
+  }
+  port=id
+  {
+    id=154
+    connect_to=156
+    connect_to=183
+    connect_to=206
+    connect_to=216
+    connect_to=226
+    connect_to=236
+    connect_to=246
+    connect_to=256
+  }
+}
+module=Gui_POTI
+{
+  id=155
+  x=0
+  y=3
+  port=parent
+  {
+    id=156
+    connect_to=154
+  }
+  port=x
+  {
+    id=157
+    audio_data=1.00000
+  }
+  port=y
+  {
+    id=158
+    audio_data=2.00000
+  }
+  port=color
+  {
+    id=159
+    string_data=red
+  }
+  port=caption
+  {
+    id=160
+    string_data=VOLUME
+  }
+  port=min
+  {
+    id=161
+    audio_data=0.00000
+  }
+  port=max
+  {
+    id=162
+    audio_data=1.00000
+  }
+  port=initial
+  {
+    id=163
+    audio_data=1.00000
+  }
+  port=value
+  {
+    id=164
+    connect_to=176
+    connect_to=180
+  }
+}
+module=Synth_BUS_DOWNLINK
+{
+  id=165
+  x=8
+  y=4
+  port=clients
+  {
+    id=166
+    audio_data=1.00000
+  }
+  port=busname
+  {
+    id=167
+    connect_to=278
+  }
+  port=left
+  {
+    id=168
+    connect_to=175
+  }
+  port=right
+  {
+    id=169
+    connect_to=179
+  }
+}
+module=Synth_BUS_UPLINK
+{
+  id=170
+  x=1
+  y=21
+  port=left
+  {
+    id=171
+    connect_to=196
+  }
+  port=right
+  {
+    id=172
+    connect_to=204
+  }
+  port=busname
+  {
+    id=173
+    connect_to=277
+  }
+}
+module=Synth_MUL
+{
+  id=174
+  x=0
+  y=7
+  port=invalue
+  {
+    id=175
+    connect_to=168
+  }
+  port=faktor
+  {
+    id=176
+    connect_to=164
+  }
+  port=outvalue
+  {
+    id=177
+    connect_to=190
+  }
+}
+module=Synth_MUL
+{
+  id=178
+  x=6
+  y=7
+  port=invalue
+  {
+    id=179
+    connect_to=169
+  }
+  port=faktor
+  {
+    id=180
+    connect_to=164
+  }
+  port=outvalue
+  {
+    id=181
+    connect_to=198
+  }
+}
+module=Gui_LABEL
+{
+  id=182
+  x=13
+  y=4
+  port=parent
+  {
+    id=183
+    connect_to=154
+  }
+  port=x
+  {
+    id=184
+    audio_data=0.00000
+  }
+  port=y
+  {
+    id=185
+    audio_data=0.00000
+  }
+  port=color
+  {
+    id=186
+    string_data=#fff7a3
+  }
+  port=caption
+  {
+    id=187
+    connect_to=278
+  }
+  port=pixmap
+  {
+    id=188
+    string_data=easylabel
+  }
+}
+module=Synth_STD_EQUALIZER
+{
+  id=189
+  x=0
+  y=17
+  port=invalue
+  {
+    id=190
+    connect_to=177
+  }
+  port=low
+  {
+    id=191
+    connect_to=234
+  }
+  port=mid
+  {
+    id=192
+    connect_to=214
+  }
+  port=high
+  {
+    id=193
+    connect_to=224
+  }
+  port=frequency
+  {
+    id=194
+    connect_to=244
+  }
+  port=q
+  {
+    id=195
+    connect_to=254
+  }
+  port=outvalue
+  {
+    id=196
+    connect_to=171
+    connect_to=270
+  }
+}
+module=Synth_STD_EQUALIZER
+{
+  id=197
+  x=7
+  y=17
+  port=invalue
+  {
+    id=198
+    connect_to=181
+  }
+  port=low
+  {
+    id=199
+    connect_to=234
+  }
+  port=mid
+  {
+    id=200
+    connect_to=214
+  }
+  port=high
+  {
+    id=201
+    connect_to=224
+  }
+  port=frequency
+  {
+    id=202
+    connect_to=244
+  }
+  port=q
+  {
+    id=203
+    connect_to=254
+  }
+  port=outvalue
+  {
+    id=204
+    connect_to=172
+    connect_to=274
+  }
+}
+module=Gui_POTI
+{
+  id=205
+  x=14
+  y=9
+  port=parent
+  {
+    id=206
+    connect_to=154
+  }
+  port=x
+  {
+    id=207
+    audio_data=1.00000
+  }
+  port=y
+  {
+    id=208
+    audio_data=10.00000
+  }
+  port=color
+  {
+    id=209
+    string_data=darkblue
+  }
+  port=caption
+  {
+    id=210
+    string_data=MID
+  }
+  port=min
+  {
+    id=211
+    audio_data=-24.00000
+  }
+  port=max
+  {
+    id=212
+    audio_data=24.00000
+  }
+  port=initial
+  {
+    id=213
+    audio_data=0.00000
+  }
+  port=value
+  {
+    id=214
+    connect_to=192
+    connect_to=200
+  }
+}
+module=Gui_POTI
+{
+  id=215
+  x=14
+  y=11
+  port=parent
+  {
+    id=216
+    connect_to=154
+  }
+  port=x
+  {
+    id=217
+    audio_data=1.00000
+  }
+  port=y
+  {
+    id=218
+    audio_data=14.00000
+  }
+  port=color
+  {
+    id=219
+    string_data=darkblue
+  }
+  port=caption
+  {
+    id=220
+    string_data=HIGH
+  }
+  port=min
+  {
+    id=221
+    audio_data=-24.00000
+  }
+  port=max
+  {
+    id=222
+    audio_data=24.00000
+  }
+  port=initial
+  {
+    id=223
+    audio_data=0.00000
+  }
+  port=value
+  {
+    id=224
+    connect_to=193
+    connect_to=201
+  }
+}
+module=Gui_POTI
+{
+  id=225
+  x=14
+  y=7
+  port=parent
+  {
+    id=226
+    connect_to=154
+  }
+  port=x
+  {
+    id=227
+    audio_data=1.00000
+  }
+  port=y
+  {
+    id=228
+    audio_data=6.00000
+  }
+  port=color
+  {
+    id=229
+    string_data=darkblue
+  }
+  port=caption
+  {
+    id=230
+    string_data=LOW
+  }
+  port=min
+  {
+    id=231
+    audio_data=-24.00000
+  }
+  port=max
+  {
+    id=232
+    audio_data=24.00000
+  }
+  port=initial
+  {
+    id=233
+    audio_data=0.00000
+  }
+  port=value
+  {
+    id=234
+    connect_to=191
+    connect_to=199
+  }
+}
+module=Gui_POTI
+{
+  id=235
+  x=14
+  y=13
+  port=parent
+  {
+    id=236
+    connect_to=154
+  }
+  port=x
+  {
+    id=237
+    audio_data=1.00000
+  }
+  port=y
+  {
+    id=238
+    audio_data=18.00000
+  }
+  port=color
+  {
+    id=239
+    string_data=darkgreen
+  }
+  port=caption
+  {
+    id=240
+    string_data=FREQUENCY
+  }
+  port=min
+  {
+    id=241
+    audio_data=1.00000
+  }
+  port=max
+  {
+    id=242
+    audio_data=5000.00000
+  }
+  port=initial
+  {
+    id=243
+    audio_data=1000.00000
+  }
+  port=value
+  {
+    id=244
+    connect_to=194
+    connect_to=202
+  }
+}
+module=Gui_POTI
+{
+  id=245
+  x=14
+  y=15
+  port=parent
+  {
+    id=246
+    connect_to=154
+  }
+  port=x
+  {
+    id=247
+    audio_data=1.00000
+  }
+  port=y
+  {
+    id=248
+    audio_data=22.00000
+  }
+  port=color
+  {
+    id=249
+    string_data=darkgreen
+  }
+  port=caption
+  {
+    id=250
+    string_data=Q
+  }
+  port=min
+  {
+    id=251
+    audio_data=0.10000
+  }
+  port=max
+  {
+    id=252
+    audio_data=2.00000
+  }
+  port=initial
+  {
+    id=253
+    audio_data=1.00000
+  }
+  port=value
+  {
+    id=254
+    connect_to=195
+    connect_to=203
+  }
+}
+module=Gui_POTI
+{
+  id=255
+  x=14
+  y=17
+  port=parent
+  {
+    id=256
+    connect_to=154
+  }
+  port=x
+  {
+    id=257
+    audio_data=1.00000
+  }
+  port=y
+  {
+    id=258
+    audio_data=26.00000
+  }
+  port=color
+  {
+    id=259
+    string_data=grey
+  }
+  port=caption
+  {
+    id=260
+    string_data=EFFECT
+  }
+  port=min
+  {
+    id=261
+    audio_data=0.00000
+  }
+  port=max
+  {
+    id=262
+    audio_data=1.00000
+  }
+  port=initial
+  {
+    id=263
+    audio_data=0.00000
+  }
+  port=value
+  {
+    id=264
+    connect_to=271
+    connect_to=275
+  }
+}
+module=Synth_BUS_UPLINK
+{
+  id=265
+  x=12
+  y=22
+  port=left
+  {
+    id=266
+    connect_to=272
+  }
+  port=right
+  {
+    id=267
+    connect_to=276
+  }
+  port=busname
+  {
+    id=268
+    string_data=effect
+  }
+}
+module=Synth_MUL
+{
+  id=269
+  x=9
+  y=20
+  port=invalue
+  {
+    id=270
+    connect_to=196
+  }
+  port=faktor
+  {
+    id=271
+    connect_to=264
+  }
+  port=outvalue
+  {
+    id=272
+    connect_to=266
+  }
+}
+module=Synth_MUL
+{
+  id=273
+  x=12
+  y=20
+  port=invalue
+  {
+    id=274
+    connect_to=204
+  }
+  port=faktor
+  {
+    id=275
+    connect_to=264
+  }
+  port=outvalue
+  {
+    id=276
+    connect_to=267
+  }
+}
+structureport
+{
+  name=output
+  x=4
+  y=20
+  position=2
+  type
+  {
+    direction=output
+    datatype=string
+    conntype=property
+  }
+  data
+  {
+    id=277
+    connect_to=173
+  }
+}
+structureport
+{
+  name=input
+  x=13
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=string
+    conntype=property
+  }
+  data
+  {
+    id=278
+    connect_to=167
+    connect_to=187
+  }
+}
+structureport
+{
+  name=parent
+  x=7
+  y=0
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=279
+    connect_to=148
+  }
+}
diff --git a/arts/examples/mixer_element_simple.arts b/arts/examples/mixer_element_simple.arts
new file mode 100644
index 00000000..01246090
--- /dev/null
+++ b/arts/examples/mixer_element_simple.arts
@@ -0,0 +1,235 @@
+name=mixer_element_simple
+module=Arts::Widget
+{
+  id=0
+  x=6
+  y=1
+  port=widgetID
+  {
+    id=1
+  }
+  port=parent
+  {
+    id=2
+  }
+  port=x
+  {
+    id=3
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=y
+  {
+    id=4
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=width
+  {
+    id=5
+    any_data=value:000000056c6f6e6700000000040000000a
+  }
+  port=height
+  {
+    id=6
+    any_data=value:000000056c6f6e6700000000040000000a
+  }
+  port=visible
+  {
+    id=7
+    any_data=value:00000008626f6f6c65616e000000000101
+  }
+}
+module=Arts::Poti
+{
+  id=8
+  x=0
+  y=3
+  port=widgetID
+  {
+    id=9
+  }
+  port=parent
+  {
+    id=10
+  }
+  port=x
+  {
+    id=11
+    any_data=value:000000056c6f6e67000000000400000064
+  }
+  port=y
+  {
+    id=12
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=width
+  {
+    id=13
+    any_data=value:000000056c6f6e67000000000400000032
+  }
+  port=height
+  {
+    id=14
+    any_data=value:000000056c6f6e67000000000400000032
+  }
+  port=visible
+  {
+    id=15
+    any_data=value:00000008626f6f6c65616e000000000101
+  }
+  port=text
+  {
+    id=16
+    string_data=VOLUME
+  }
+  port=color
+  {
+    id=17
+    string_data=red
+  }
+  port=min
+  {
+    id=18
+    audio_data=0.00000
+  }
+  port=max
+  {
+    id=19
+    audio_data=1.00000
+  }
+  port=value
+  {
+    id=20
+    audio_data=0.50000
+  }
+}
+module=Arts::Synth_BUS_DOWNLINK
+{
+  id=21
+  x=8
+  y=4
+  port=busname
+  {
+    id=22
+  }
+  port=left
+  {
+    id=23
+    connect_to=30
+  }
+  port=right
+  {
+    id=24
+    connect_to=34
+  }
+}
+module=Arts::Synth_BUS_UPLINK
+{
+  id=25
+  x=1
+  y=10
+  port=busname
+  {
+    id=26
+  }
+  port=left
+  {
+    id=27
+    connect_to=32
+  }
+  port=right
+  {
+    id=28
+    connect_to=36
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=29
+  x=0
+  y=7
+  port=invalue1
+  {
+    id=30
+    connect_to=23
+  }
+  port=invalue2
+  {
+    id=31
+  }
+  port=outvalue
+  {
+    id=32
+    connect_to=27
+  }
+}
+module=Arts::Synth_MUL
+{
+  id=33
+  x=3
+  y=7
+  port=invalue1
+  {
+    id=34
+    connect_to=24
+  }
+  port=invalue2
+  {
+    id=35
+  }
+  port=outvalue
+  {
+    id=36
+    connect_to=28
+  }
+}
+structureport
+{
+  name=output
+  x=13
+  y=10
+  position=2
+  type
+  {
+    direction=input
+    datatype=string
+    conntype=property
+  }
+  data
+  {
+    id=37
+  }
+}
+structureport
+{
+  name=input
+  x=13
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=string
+    conntype=property
+  }
+  data
+  {
+    id=38
+  }
+}
+structureport
+{
+  name=parent
+  x=7
+  y=0
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=39
+  }
+}
diff --git a/arts/examples/template_Empty_Structure.arts b/arts/examples/template_Empty_Structure.arts
new file mode 100644
index 00000000..c8df90c3
--- /dev/null
+++ b/arts/examples/template_Empty_Structure.arts
@@ -0,0 +1 @@
+name=template_Empty_Structure
diff --git a/arts/examples/template_Instrument.arts b/arts/examples/template_Instrument.arts
new file mode 100644
index 00000000..e555e424
--- /dev/null
+++ b/arts/examples/template_Instrument.arts
@@ -0,0 +1,103 @@
+name=template_Instrument
+structureport
+{
+  name=frequency
+  x=1
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=11
+  }
+}
+structureport
+{
+  name=velocity
+  x=3
+  y=0
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=12
+  }
+}
+structureport
+{
+  name=pressed
+  x=5
+  y=0
+  position=3
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=13
+  }
+}
+structureport
+{
+  name=left
+  x=1
+  y=8
+  position=0
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=14
+  }
+}
+structureport
+{
+  name=right
+  x=3
+  y=8
+  position=1
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=15
+  }
+}
+structureport
+{
+  name=done
+  x=5
+  y=8
+  position=2
+  type
+  {
+    direction=input
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=16
+  }
+}
diff --git a/arts/examples/template_Instrument_GUI.arts b/arts/examples/template_Instrument_GUI.arts
new file mode 100644
index 00000000..67db385e
--- /dev/null
+++ b/arts/examples/template_Instrument_GUI.arts
@@ -0,0 +1,91 @@
+name=template_Instrument_GUI
+module=Arts::Widget
+{
+  id=0
+  x=1
+  y=2
+  port=widgetID
+  {
+    id=1
+  }
+  port=parent
+  {
+    id=2
+  }
+  port=x
+  {
+    id=3
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=y
+  {
+    id=4
+    any_data=value:000000056c6f6e67000000000400000000
+  }
+  port=width
+  {
+    id=5
+    any_data=value:000000056c6f6e6700000000040000000a
+  }
+  port=height
+  {
+    id=6
+    any_data=value:000000056c6f6e6700000000040000000a
+  }
+  port=visible
+  {
+    id=7
+    any_data=value:00000008626f6f6c65616e000000000101
+  }
+}
+structureport
+{
+  name=parent
+  x=2
+  y=1
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=8
+  }
+}
+structureport
+{
+  name=x
+  x=3
+  y=1
+  position=1
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=property
+  }
+  data
+  {
+    id=9
+  }
+}
+structureport
+{
+  name=y
+  x=4
+  y=1
+  position=2
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=property
+  }
+  data
+  {
+    id=10
+  }
+}
diff --git a/arts/examples/template_Mixer_Element.arts b/arts/examples/template_Mixer_Element.arts
new file mode 100644
index 00000000..40c3e63c
--- /dev/null
+++ b/arts/examples/template_Mixer_Element.arts
@@ -0,0 +1,176 @@
+name=template_Mixer_Element
+module=Gui_SUB_PANEL
+{
+  id=0
+  x=0
+  y=1
+  port=parent
+  {
+    id=1
+    connect_to=26
+  }
+  port=x
+  {
+    id=2
+    audio_data=0.00000
+  }
+  port=y
+  {
+    id=3
+    audio_data=0.00000
+  }
+  port=width
+  {
+    id=4
+    audio_data=6.50000
+  }
+  port=height
+  {
+    id=5
+    audio_data=7.50000
+  }
+  port=pixmap
+  {
+    id=6
+    string_data=easyblue
+  }
+  port=id
+  {
+    id=7
+    connect_to=18
+  }
+}
+module=Synth_BUS_DOWNLINK
+{
+  id=8
+  x=2
+  y=4
+  port=clients
+  {
+    id=9
+    audio_data=1.00000
+  }
+  port=busname
+  {
+    id=10
+    connect_to=25
+  }
+  port=left
+  {
+    id=11
+  }
+  port=right
+  {
+    id=12
+  }
+}
+module=Synth_BUS_UPLINK
+{
+  id=13
+  x=3
+  y=8
+  port=left
+  {
+    id=14
+  }
+  port=right
+  {
+    id=15
+  }
+  port=busname
+  {
+    id=16
+    connect_to=24
+  }
+}
+module=Gui_LABEL
+{
+  id=17
+  x=6
+  y=4
+  port=parent
+  {
+    id=18
+    connect_to=7
+  }
+  port=x
+  {
+    id=19
+    audio_data=0.00000
+  }
+  port=y
+  {
+    id=20
+    audio_data=0.00000
+  }
+  port=color
+  {
+    id=21
+    string_data=#fff7a3
+  }
+  port=caption
+  {
+    id=22
+    connect_to=25
+  }
+  port=pixmap
+  {
+    id=23
+    string_data=easylabel
+  }
+}
+structureport
+{
+  name=output
+  x=6
+  y=7
+  position=2
+  type
+  {
+    direction=output
+    datatype=string
+    conntype=property
+  }
+  data
+  {
+    id=24
+    connect_to=16
+  }
+}
+structureport
+{
+  name=input
+  x=7
+  y=0
+  position=1
+  type
+  {
+    direction=output
+    datatype=string
+    conntype=property
+  }
+  data
+  {
+    id=25
+    connect_to=10
+    connect_to=22
+  }
+}
+structureport
+{
+  name=parent
+  x=1
+  y=0
+  position=0
+  type
+  {
+    direction=output
+    datatype=audio
+    conntype=stream
+  }
+  data
+  {
+    id=26
+    connect_to=1
+  }
+}