-\fIctime\fR(3).
-It is useful for seeing how \fInmh\fR will interpret a date.
-
-The \fIdp\fR program treats each argument as a single date,
-and prints the date out in the official 822\-format.
-Hence, it is usually best to enclose each argument in double\-quotes for the
+.IR ctime (3).
+It is useful for seeing how
+.B nmh
+will interpret a date.
+.PP
+The
+.B dp
+program treats each argument as a single date,
+and prints the date out in the official RFC 822 format.
+Hence, it is usually best to enclose each argument in quotes for the