===================================================================
RCS file: /cvs/mandoc/mandoc_html.3,v
retrieving revision 1.7
retrieving revision 1.8
diff -u -p -r1.7 -r1.8
--- mandoc/mandoc_html.3	2017/03/15 11:29:53	1.7
+++ mandoc/mandoc_html.3	2017/05/12 17:58:21	1.8
@@ -1,4 +1,4 @@
-.\"	$Id: mandoc_html.3,v 1.7 2017/03/15 11:29:53 schwarze Exp $
+.\"	$Id: mandoc_html.3,v 1.8 2017/05/12 17:58:21 schwarze Exp $
 .\"
 .\" Copyright (c) 2014, 2017 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: March 15 2017 $
+.Dd $Mdocdate: May 12 2017 $
 .Dt MANDOC_HTML 3
 .Os
 .Sh NAME
@@ -204,7 +204,7 @@ Instead, the rest of the format string consists of pai
 argument type letters and style name letters.
 .El
 .Pp
-Argument type letters each require on argument as follows:
+Argument type letters each require one argument as follows:
 .Bl -tag -width 1n -offset indent
 .It Cm h
 Requires one
@@ -233,10 +233,18 @@ width specifier.
 If the argument is
 .Dv NULL ,
 nothing is printed for this pair.
-.It Cm W
-Similar to
-.Cm w ,
-but makes the width negative by multiplying it with \(mi1.
+.Pp
+The
+.Cm w
+argument type letter can optionally be followed by one or two
+modifier letters.
+The modifier
+.Cm +
+increases the width by 10% to make even bold text fit
+and adds two units for padding between columns.
+The modifier
+.Cm \-
+makes the width negative by multiplying it with \-1.
 .El
 .Pp
 Style name letters decide what to do with the preceding argument: