===================================================================
RCS file: /cvs/mandoc/man.7,v
retrieving revision 1.111
retrieving revision 1.112
diff -u -p -r1.111 -r1.112
--- mandoc/man.7	2011/09/26 23:07:31	1.111
+++ mandoc/man.7	2011/12/02 01:37:14	1.112
@@ -1,4 +1,4 @@
-.\"	$Id: man.7,v 1.111 2011/09/26 23:07:31 schwarze Exp $
+.\"	$Id: man.7,v 1.112 2011/12/02 01:37:14 schwarze Exp $
 .\"
 .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 .\" Copyright (c) 2011 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: September 26 2011 $
+.Dd $Mdocdate: December 2 2011 $
 .Dt MAN 7
 .Os
 .Sh NAME
@@ -840,6 +840,19 @@ The
 .Sx \&sp
 macro does not accept negative values in mandoc.
 In GNU troff, this would result in strange behaviour.
+.It
+In page header lines, GNU troff versions up to and including 1.21
+only print
+.Ar volume
+names explicitly specified in the
+.Sx \&TH
+macro; mandoc and newer groff print the default volume name
+corresponding to the
+.Ar section
+number when no
+.Ar volume
+is given, like in
+.Xr mdoc 7 .
 .El
 .Sh SEE ALSO
 .Xr man 1 ,