===================================================================
RCS file: /cvs/mandoc/tbl.7,v
retrieving revision 1.9
retrieving revision 1.11
diff -u -p -r1.9 -r1.11
--- mandoc/tbl.7	2011/01/11 14:12:01	1.9
+++ mandoc/tbl.7	2011/01/17 21:29:04	1.11
@@ -1,4 +1,4 @@
-.\"	$Id: tbl.7,v 1.9 2011/01/11 14:12:01 kristaps Exp $
+.\"	$Id: tbl.7,v 1.11 2011/01/17 21:29:04 kristaps Exp $
 .\"
 .\" Copyright (c) 2010 Kristaps Dzonsons <kristaps@bsd.lv>
 .\"
@@ -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: January 11 2011 $
+.Dd $Mdocdate: January 17 2011 $
 .Dt TBL 7
 .Os
 .Sh NAME
@@ -180,8 +180,6 @@ Accepts a single-character argument.
 This character will be used as the decimal point with the
 .Cm n
 layout key.
-This option is not supported by
-.Xr mandoc 1 .
 .It Cm nospaces
 This option is not supported by
 .Xr mandoc 1 .
@@ -226,6 +224,8 @@ Vertically span rows from the last non-
 .Ns Cm ^
 data cell.
 It is an error to invoke a vertical span on the first layout row.
+Unlike a horizontal spanner, you must specify an empty cell (if it not
+empty, the data is discarded) in the corresponding data cell.
 .It Cm \-
 Replace the data cell (its contents will be lost) with a single
 horizontal line.