The ms macros support the standard groff preprocessors:
tbl, pic, eqn, and refer.
You mark text meant for preprocessors by enclosing it in pairs of tags
as follows.
H]Denotes a table, to be processed by the
tblpreprocessor. The optional argumentHtoTSinstructsgroffto create a running header with the information up to theTHmacro.groffprints the header at the beginning of the table; if the table runs onto another page,groffprints the header on the next page as well.
Denotes a graphic, to be processed by the
picpreprocessor. You can create apicfile by hand, using the AT&Tpicmanual available on the Web as a reference, or by using a graphics program such asxfig.