# Extension points in `org.dita.xhtml`

The `org.dita.xhtml` plug-in provides shared extension points that can be used to modify processing in HTML-based transformation types such as Eclipse help, HTML Help, and XHTML.

dita.conductor.html.param
  Pass parameters to the HTML and HTML Help transformations.
dita.conductor.xhtml.param
  Pass parameters to the XHTML and Eclipse Help transformations.
dita.conductor.xhtml.toc.param
  Pass parameters to the XSLT step that generates the XHTML table of contents (TOC).
dita.xsl.html.cover
  Overrides the default HTML cover page generation process.
dita.xsl.htmltoc
  Overrides the default XSLT step that generates the HTML table of contents (TOC).
dita.xsl.xhtml
  Overrides the default HTML or XHTML transformation, including HTML Help and Eclipse Help. The referenced file is integrated directly into the XSLT step that generates XHTML.