-There are four kinds of directives: \*(lqtype\*(rq directives, which
-name the type and subtype of the content; \*(lqexternal-type\*(rq
-directives, which also name the type and subtype of the content; the
-\*(lqmessage\*(rq directive (#forw), which is used to forward one or
-more messages; and, the \*(lqbegin\*(rq directive (#begin), which is
-used to create a multipart content.
-.PP
-The \*(lqtype\*(rq directive is used to directly specify the type and
+There are four kinds of directives:
+\*(lqtype\*(rq,
+\*(lqexternal-type\*(rq,
+\*(lqmessage\*(rq (#forw),
+and \*(lqbegin\*(rq (#begin).
+.PP
+.B "(1) The \*(lqtype\*(rq directive
+is used to directly specify the type and