+You can also use an external format program to format the message body.
+The format program is specified by the
+.IR formatproc
+profile entry, and is enabled by the \*(lqformat\*(rq flag. A message
+filter using an external format program would look like this:
+.PP
+.RS 5
+.nf
+body:component=\*(lq>\*(rq,\|nowrap,\|format
+.fi
+.RE
+.PP
+See the
+.IR mhl(1)
+documentation for more information. The format program can be changed by
+the
+.B \-fmtproc
+.I program
+and
+.B \-nofmtproc
+switches.
+.PP