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- <p>DITA Open Toolkit</p>
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- </div></header><nav role="toc"><ul><li><a href="../index.html">DITA Open Toolkit 3.5</a></li><li><a href="../release-notes/index.html">Release Notes</a></li><li><a href="../topics/installing-client.html">Installing DITA-OT</a></li><li><a href="../topics/building-output.html">Building output</a></li><li><a href="../topics/input-formats.html">Authoring formats</a></li><li><a href="../topics/output-formats.html">Output formats</a></li><li><a href="../parameters/index.html">Parameters</a></li><li><a href="../topics/html-customization.html">Customizing HTML</a></li><li><a href="../topics/pdf-customization.html">Customizing PDF</a></li><li><a href="../topics/adding-plugins.html">Adding plug-ins</a></li><li><a href="../topics/custom-plugins.html">Creating plug-ins</a></li><li><a href="../topics/troubleshooting-overview.html">Troubleshooting</a></li><li><a href="../reference/index.html">Reference</a><ul><li><a href="../reference/architecture.html">DITA-OT architecture</a></li><li><a href="../reference/dita-spec-support.html">DITA specification support</a></li><li class="active"><a href="../extension-points/plugin-extension-points.html">Extension points</a><ul><li><a href="../extension-points/all-extension-points.html">All extension points</a></li><li><a href="../extension-points/plugin-extension-points-general.html">General extension points</a></li><li><a href="../extension-points/plugin-extension-points-pre-processing.html">Pre-processing extension points</a></li><li><a href="../extension-points/plugin-extension-points-xslt-import.html">XSLT-import extension points</a></li><li><a href="../extension-points/plugin-extension-points-xslt-parameters.html">XSLT-parameter extension points</a></li><li><a href="../extension-points/plugin-extension-points-support.html">Version and support information</a></li><li><a href="../extension-points/extension-points-by-plugin.html">Plug-in extension points</a></li></ul></li><li><a href="../reference/license.html">License</a></li><li><a href="../reference/glossary.html#glossary">Glossary</a></li></ul></li><li><a href="../topics/dita-and-dita-ot-resources.html">Resources</a></li></ul></nav><main role="main"><article role="article" aria-labelledby="ariaid-title1">
- <h1 class="title topictitle1" id="ariaid-title1">Extension point reference</h1>
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- <p class="shortdesc">DITA Open Toolkit provides a series of extension points that can be used to integrate changes into the core
- code. Extension points are defined in the <span class="ph filepath">plugin.xml</span> file for each plug-in. When plug-ins are
- installed, DITA-OT makes each extension visible to the rest of the toolkit.</p>
-
- <nav role="navigation" class="related-links"><ul class="ullinks"><li class="link ulchildlink"><strong><a href="../extension-points/all-extension-points.html">All DITA-OT extension points</a></strong><br>The pre-defined extension points can be used to add new functionality to DITA-OT. If your toolkit installation includes custom plug-ins that define additional extension points, you can add to this list by rebuilding the DITA-OT documentation.</li><li class="link ulchildlink"><strong><a href="../extension-points/plugin-extension-points-general.html">General extension points</a></strong><br>These extension points enable you to extend DITA-OT. You can add Ant targets or imports; add a Java library to the <span class="keyword parmname">classpath</span> parameter; add a new transformation type; extend a catalog file; add new diagnostic messages, and more.</li><li class="link ulchildlink"><strong><a href="../extension-points/plugin-extension-points-pre-processing.html">Pre-processing extension points</a></strong><br>You can use these extension points to run an Ant target before or after the pre-processing stage. If necessary, you can also run an Ant target before a specific pre-processing step — but this approach is not recommended.</li><li class="link ulchildlink"><strong><a href="../extension-points/plugin-extension-points-xslt-import.html">XSLT-import extension points</a></strong><br>You can use these extension points to override XSLT processing steps in pre-processing and certain transformation types. The value of the <code class="keyword markupname xmlatt">@file</code> attribute in the <code class="keyword markupname xmlelement"><feature></code> element specifies a relative path to an XSL file in the current plug-in. The plug-in installer adds a XSL import statement to the default DITA-OT code, so that the XSL override becomes part of the normal build.</li><li class="link ulchildlink"><strong><a href="../extension-points/plugin-extension-points-xslt-parameters.html">XSLT-parameter extension points</a></strong><br>You can use these extension points to pass parameters into existing XSLT steps in both the pre-processing pipeline and DITA-OT transformation. The parameters generally will be available as global <code class="keyword markupname xmlelement"><xsl:param></code> values with XSLT overrides.</li><li class="link ulchildlink"><strong><a href="../extension-points/plugin-extension-points-support.html">Version and support information</a></strong><br>You can use these extension points to define version and support information for a plug-in. Currently, DITA-OT does not do anything with this information, but it might do so in the future.</li><li class="link ulchildlink"><strong><a href="../extension-points/extension-points-by-plugin.html">Extension points by plug-in</a></strong><br>The default plug-ins that ship with DITA Open Toolkit include a series of extension points that can be used to modify various aspects of toolkit processing.</li></ul><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../reference/index.html" title="The Reference topics provide more advanced information about the DITA-OT architecture, OASIS specification support, and licensing.">Reference</a></div></div></nav></article></main></body></html>
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