<pd>The <pd> element specifies a parameter definition within a
parameter list entry. This element
is part of the DITA programming domain, a special set of DITA elements
designed to document programming tasks, concepts, and reference information.
See appendix for information about this element in OASIS document type shells.
+ topic/dd pr-d/pd
See parml.
The following attributes are available on this element: Universal attribute group and outputclass.