===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/tmux.1,v
retrieving revision 1.772
retrieving revision 1.773
diff -u -r1.772 -r1.773
--- src/usr.bin/tmux/tmux.1	2020/05/16 16:44:54	1.772
+++ src/usr.bin/tmux/tmux.1	2020/05/21 07:24:13	1.773
@@ -1,4 +1,4 @@
-.\" $OpenBSD: tmux.1,v 1.772 2020/05/16 16:44:54 nicm Exp $
+.\" $OpenBSD: tmux.1,v 1.773 2020/05/21 07:24:13 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: May 16 2020 $
+.Dd $Mdocdate: May 21 2020 $
 .Dt TMUX 1
 .Os
 .Sh NAME
@@ -1251,6 +1251,7 @@
 specified multiple times.
 .It Xo Ic refresh-client
 .Op Fl cDlLRSU
+.Op Fl A Ar pane:state
 .Op Fl C Ar XxY
 .Op Fl f Ar flags
 .Op Fl t Ar target-client
@@ -1295,7 +1296,25 @@
 it.
 .Pp
 .Fl C
-sets the width and height of a control client.
+sets the width and height of a control mode client.
+.Fl A
+informs
+.Nm
+of a control mode client's interest in a pane.
+The argument is a pane ID (with leading
+.Ql % ) ,
+a colon, then one of
+.Ql on
+or
+.Ql off .
+If
+.Ql off ,
+.Nm
+will not send output from the pane to the client and if all clients have turned
+the pane off, will stop reading from the pane.
+.Fl A
+may be given multiple times.
+.Pp
 .Fl f
 sets a comma-separated list of client flags, see
 .Ic attach-session .