Описание тега dita-ot
The DITA Open Toolkit (sometimes shortened to DITA-OT or toolkit) is used by many other tools as the basis for building deliverables from DITA source files. It assembles the source files as specified in a DITA map file, implements flagging and filtering as specified by an optional DITAVAL file, and uses XSLT to create end-user deliverables.
DITA Open Toolkit is run in Java, and build parameters can be passed to the toolkit either by creating an Ant build file (preferred) or directly to the Java process.
In the case of PDF output, the XSLT generates an XSL-FO object that is then transformed by an FO rendering engine. The DITA Open Toolkit includes the open-source Apache FOP engine, but third-party engines can be used with the toolkit as well.
More information about the DITA Open Toolkit is available https://www.dita-ot.org/