There are several ways to customize output from the DITA Open Toolkit,
some of which are better or than others. The most comprehensive method is
to create a plug-in, which can do anything from modifying the presentation
of a single element, to adding support for a new DITA Specialization, to
creating an entirely new transform type. Plug-ins can likewise scale up from
a couple of 5 line XML files all the way to complex set of XSLT or Java
libraries. In this presentation from December 2011, given to the Boston and RTP DITA User Groups, we discussed the various methods
available for overriding the toolkit, with a particular focus on plug-ins
(including samples).