===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/tmux.1,v
retrieving revision 1.600
retrieving revision 1.601
diff -u -r1.600 -r1.601
--- src/usr.bin/tmux/tmux.1	2018/06/03 10:17:30	1.600
+++ src/usr.bin/tmux/tmux.1	2018/06/08 09:41:34	1.601
@@ -1,4 +1,4 @@
-.\" $OpenBSD: tmux.1,v 1.600 2018/06/03 10:17:30 nicm Exp $
+.\" $OpenBSD: tmux.1,v 1.601 2018/06/08 09:41:34 nicm Exp $
 .\"
 .\" Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
 .\"
@@ -14,7 +14,7 @@
 .\" IN AN 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 3 2018 $
+.Dd $Mdocdate: June 8 2018 $
 .Dt TMUX 1
 .Os
 .Sh NAME
@@ -850,7 +850,8 @@
 .Fl x
 and
 .Fl y
-can be used to specify a different size.
+can be used to specify a different size, with the special case "-" which uses
+the size of the current terminal.
 .Pp
 If run from a terminal, any
 .Xr termios 4