-as ``IMP going down'' messages, ``host down'' and other error messages,
-and, perhaps, stray NCP messages.
-.SH "SEE ALSO"
-imp(4), implog(8)
+as
+.Dq Tn IMP No going down
+messages,
+.Dq host down
+and other error messages,
+and, perhaps, stray
+.Tn NCP
+messages.
+.Sh SEE ALSO
+.Xr imp 4 ,
+.Xr implog 8
+.Sh HISTORY
+The
+.Nm
+command appeared in
+.Bx 4.2 .