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<title>Adding New Help Files - Using the GNAT Programming Studio</title>
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Previous:&nbsp;<a rel="previous" accesskey="p" href="The-Help-Menu.html#The-Help-Menu">The Help Menu</a>,
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<h3 class="section">3.2 Adding New Help Files</h3>

<p><a name="index-gps_005findex_002exml-105"></a>GPS will search for the help files in the list of directories set in
the environment variable <code>GPS_DOC_PATH</code> (a colon-separated list
of directories on Unix systems, or semicolon-separated list of
directories on Windows systems). In addition, the
default directory <code>&lt;prefix&gt;/share/doc/gps/html</code> is also searched. If the
file cannot be found in any of these directories, the corresponding
menu item will be disabled.

   <p>The environment variable <code>GPS_DOC_PATH</code> can either be set by each
user in his own environment, or can be set system-wide by modifying
the small wrapper script <samp><span class="file">gps</span></samp> itself on Unix systems.

   <p>It can also be set programmatically through the GPS shell or any of the
scripting languages. This is done with

<pre class="smallexample">     GPS.add_doc_directory ("/home/foo")
</pre>
   <p>The specific list of files shown in the menus is set by reading the
index files in each of the directories in <code>GPS_DOC_PATH</code>. These
index files must be called <samp><span class="file">gps_index.xml</span></samp>.

   <p>The format of these index files is specified in see <a href="Adding-documentation.html#Adding-documentation">Adding documentation</a>.

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