===================================================================
RCS file: /cvs/mandoc/mandoc.1,v
retrieving revision 1.188
retrieving revision 1.189
diff -u -p -r1.188 -r1.189
--- mandoc/mandoc.1	2017/05/17 23:39:31	1.188
+++ mandoc/mandoc.1	2017/05/30 19:30:38	1.189
@@ -1,4 +1,4 @@
-.\"	$Id: mandoc.1,v 1.188 2017/05/17 23:39:31 schwarze Exp $
+.\"	$Id: mandoc.1,v 1.189 2017/05/30 19:30:38 schwarze Exp $
 .\"
 .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 .\" Copyright (c) 2012, 2014-2017 Ingo Schwarze <schwarze@openbsd.org>
@@ -15,7 +15,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: May 17 2017 $
+.Dd $Mdocdate: May 30 2017 $
 .Dt MANDOC 1
 .Os
 .Sh NAME
@@ -742,6 +742,18 @@ are hidden unless their level, or a lower level, is re
 option or
 .Fl T Cm lint
 output mode.
+.Ss Style messages
+.Bl -ohang
+.It Sy "useless macro"
+.Pq mdoc
+A
+.Ic \&Bt ,
+.Ic \&Tn ,
+or
+.Ic \Ud
+macro was found.
+Simply delete it, it serves no useful purpose.
+.El
 .Ss Warnings related to the document prologue
 .Bl -ohang
 .It Sy "missing manual title, using UNTITLED"