===================================================================
RCS file: /cvs/mandoc/man.7,v
retrieving revision 1.134
retrieving revision 1.135
diff -u -p -r1.134 -r1.135
--- mandoc/man.7	2017/05/05 15:54:59	1.134
+++ mandoc/man.7	2017/05/07 21:44:49	1.135
@@ -1,4 +1,4 @@
-.\"	$Id: man.7,v 1.134 2017/05/05 15:54:59 schwarze Exp $
+.\"	$Id: man.7,v 1.135 2017/05/07 21:44:49 schwarze Exp $
 .\"
 .\" Copyright (c) 2009, 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
 .\" Copyright (c) 2011-2015 Ingo Schwarze <schwarze@openbsd.org>
@@ -16,7 +16,7 @@
 .\" 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 5 2017 $
+.Dd $Mdocdate: May 7 2017 $
 .Dt MAN 7
 .Os
 .Sh NAME
@@ -348,8 +348,12 @@ See also
 and
 .Sx \&IR .
 .Ss \&DT
-Has no effect.
-Included for compatibility.
+Restore the default tabulator positions.
+They are at intervals of 0.5 inches.
+This has no effect unless the tabulator positions were changed with the
+.Xr roff 7
+.Ic \&ta
+request.
 .Ss \&EE
 This is a non-standard GNU extension, included only for compatibility.
 In