source: trunk/documents/UserDoc/DocBookUsersGuides/ForApplicationDeveloper/xml/Detector/geomXML.xml@ 1324

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<sect2 id="sect.Geom.GDML">
<title>
Importing XML Models Using GDML
</title>

<para>
Geometry Description Markup Language (<ulink url="http://cern.ch/gdml/">GDML</ulink>)
is a markup language based on XML and suited for the description of detector
geometry models. It allows for easy exchange of geometry data in a
<emphasis>human-readable</emphasis> XML-based description and structured
formatting.
</para>
<para>
The GDML parser is a component of Geant4 which can be built
and installed as an optional choice. It allows for importing and
exporting GDML files, following the schema specified in the
<ulink url="http://cern.ch/gdml/doc/GDMLmanual.pdf">GDML documentation</ulink>.
The installation of the plugin is optional and requires the installation of the
<ulink url="http://xerces.apache.org/xerces-c/">XercesC</ulink> DOM parser.
</para>
<para>
Examples of how to import and export a detector description model based on
<ulink url="http://cern.ch/gdml/"><emphasis role="bold">GDML</emphasis></ulink>,
and also how to extend the GDML schema, are provided and can be found in
<literal>examples/extended/persistency/gdml</literal>. 
</para>

</sect2>