Installing plug-ins
Plug-ins are generally distributed as zip files. There are two steps to installing a plug-in: unzipping and integrating.
About this task
It is possible to define a plug-in so that it may be installed anywhere, although most expect to be placed in plugins/ directory inside of the DITA-OT. Most plug-ins do not require a specific install directory and can go in either of the default locations, but some may come with instructions for a particular install directory.