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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 3.3</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/alternative-input-formats.html">Authoring formats</a></li><li><a href="../topics/building-output.html">Building output</a></li><li><a href="../parameters/index.html">Setting parameters</a></li><li><a href="../topics/customizing.html">Customizing DITA-OT</a><ul><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/custom-plugins.html">Working with plug-ins</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="../topics/migration.html">Migrating customizations</a></li><li><a href="../topics/globalization.html">Globalizing DITA content</a></li><li><a href="../topics/rebuilding-docs.html">Rebuilding documentation</a></li></ul></li><li><a href="../topics/troubleshooting-overview.html">Troubleshooting</a></li><li><a href="../reference/index.html">Reference</a></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 points</h1>
- <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="../topics/customizing.html" title="There are several ways to customize and extend the toolkit. You can adjust various aspects of the default output by setting parameters or using custom stylesheets. For more complex customizations, use custom DITA-OT plug-ins to override other parts of processing.">Customizing DITA Open Toolkit</a></div></div></nav></article></main></body></html>
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