===================================================================
RCS file: /cvs/mandoc/mandoc_html.3,v
retrieving revision 1.17
retrieving revision 1.18
diff -u -p -r1.17 -r1.18
--- mandoc/mandoc_html.3	2018/06/25 16:54:59	1.17
+++ mandoc/mandoc_html.3	2018/11/26 01:38:23	1.18
@@ -1,4 +1,4 @@
-.\"	$Id: mandoc_html.3,v 1.17 2018/06/25 16:54:59 schwarze Exp $
+.\"	$Id: mandoc_html.3,v 1.18 2018/11/26 01:38:23 schwarze Exp $
 .\"
 .\" Copyright (c) 2014, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
 .\"
@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: June 25 2018 $
+.Dd $Mdocdate: November 26 2018 $
 .Dt MANDOC_HTML 3
 .Os
 .Sh NAME
@@ -216,6 +216,14 @@ It requires two
 .Va char *
 arguments.
 The first is the name of the style property, the second its value.
+The name must not be
+.Dv NULL .
+The
+.Cm s
+.Ar fmt
+letter can be repeated, each repetition requiring an additional pair of
+.Va char *
+arguments.
 .El
 .Pp
 .Fn print_otag