+.An -nosplit
+.An Douglas McIlroy Aq Mt m.douglas.mcilroy@dartmouth.edu
+designed and implemented the original version of these macros,
+wrote the original version of this manual page,
+and was the first to use them when he edited volume 1 of the
+.At v7
+manual pages.
+.Pp
+.An James Clark
+later rewrote the macros for groff.
+.An Eric S. Raymond Aq Mt esr@thyrsus.com
+and
+.An Werner Lemberg Aq Mt wl@gnu.org
+added the extended
+.Nm
+macros to groff in 2007.
+.Pp
+The
+.Xr mandoc 1
+program and this