# DITA-OT parameters

Certain parameters apply to all DITA-OT transformations. Other parameters are common to the HTML-based transformations. Some parameters apply only to specific transformation types. These parameters can be passed as options to the dita command using the --parameter=value syntax or included in build scripts as Ant properties.

If your toolkit installation includes custom plug-ins that define additional parameters, you can add entries to the following topics by rebuilding the DITA-OT documentation.