+.PP
+The
+.B \-fmtproc
+and
+.B \-nofmtproc
+switches can be used to override the
+.I formatproc
+profile entry.
+.PP
+The
+.I formatarg
+option specifies a string that is used as an argument to the format filter.
+This string is processed by
+.BR mh\-format (5)
+and all of the message components are available for use. Multiple
+.I formatarg
+options can be used to build up multiple arguments to the format filter.