Create XML for a specific DTD?
To create a specific XML DTD output format, changes are required to the translation files. See guide.html and CustomRef.html for details on changing translation files. Depending on the nature of the XML DTD and how closely it matches an existing, supported format, it may be faster to start from an existing translation file than start from scratch. For example, if similar to the Docbook DTD, starting with docbook.trn and modifying that (or applying changes to trnflag.trn to override docbook.trn).