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<?xml version="1.0" encoding="UTF-8" ?>
<sect1 id="variables">
<sect1info>
<authorgroup>
<author>
<firstname>Keith</firstname>
<surname>Isdale</surname>
<affiliation>
<address><email>k_isdale@tpg.com.au</email></address>
</affiliation>
</author>
<!-- TRANS:ROLES_OF_TRANSLATORS -->
</authorgroup>
</sect1info>
<title>Working With Variables</title>
<para>
If the inspector dialog is not showing use the
<menuchoice>
<guimenu>Tools</guimenu>
<guimenuitem>Show inspectors</guimenuitem>
</menuchoice>
menu item.
</para>
<para>
Local and global variables are show in a tab on the inspector dialog.
The following example shows a XSLT code segment that declares a global and a local variable
</para>
<informalexample>
<programlisting>
<xsl:variable name="globalvariable" select="'foo'"/>
<xsl:template match="/"/>
<xsl:param name="localvariable" select="'bar'"/>
</xsl:template match="/"/>
</programlisting>
</informalexample>
<para>
Clicking with with mouse on a variable in the list will cause summary
information to be displayed in the bottom of the dialog. If a variable has
a select expression, for example
</para>
<informalexample>
<programlisting>
<xsl:variable name="changeable" select="'oldValue'" />
</programlisting>
</informalexample>
<para>
then a new XPath an be choosen by entering a new value
for <guilabel>Variable expression</guilabel> then clicking the <guibutton>Set expression</guibutton> button.</para>
<screenshot>
<screeninfo>The Variables tab</screeninfo>
<mediaobject>
<imageobject>
<imagedata fileref="variables_window.png" format="PNG" />
</imageobject>
<textobject><phrase>The Variables Tab</phrase></textobject>
<caption><para>The Variables Tab</para></caption>
</mediaobject>
</screenshot>
<para>
Clicking on a variable entry in the list shown will cause the cursor in
the main window to move to the file and line number indicated.
</para>
</sect1>
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