The following XSLT steps are available to override in the core toolkit:

dita.xsl.xhtml

Overrides default (X)HTML output (including HTML Help and Eclipse Help). The referenced file is integrated directly into the XSLT step that generates XHTML.

dita.xsl.xslfo

Overrides default PDF output (formerly known as PDF2). The referenced file is integrated directly into the XSLT step that generates XSL-FO for PDF.

dita.xsl.docbook

Overrides default DocBook output.

dita.xsl.rtf

Overrides default RTF output.

dita.xsl.eclipse.plugin

Overrides the step that generates plugin.xml for Eclipse.

dita.xsl.conref

Overrides the preprocess step that resolves conref.

dita.xsl.topicpull

Overrides the preprocess step "topicpull" (the step that pulls text into <xref> elements, among other things).

dita.xsl.mapref

Overrides the preprocess step "mapref" (the step that resolves references to other maps).

dita.xsl.mappull

Overrides the preprocess step "mappull" (the step that updates navtitles in maps and causes attributes to cascade).

dita.xsl.maplink

Overrides the preprocess step "maplink" (the step that generates map-based links).

dita.xsl.fo

Override the (now deprecated) original PDF output, which is still available with the transform type "legacypdf".

Example

The following two files represent a complete, simple style plug-in. The plugin.xml file declares an XSLT file that extends XHTML processing; the XSLT file overrides default header processing to provide a (theoretical) banner.

plugin.xml:
<?xml version="1.0" encoding="UTF-8"?>
<plugin id="com.example.brandheader">
  <feature extension="dita.xsl.xhtml" file="xsl/header.xsl"/>
</plugin>

xsl/header.xsl:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" 
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:template name="gen-user-header">
    <div><img src="http://www.example.com/company_banner.jpg" 
              alt="Example Company Banner"/></div>
  </xsl:template>
</xsl:stylesheet>