detach-client [-P] [-a] [-s target-session] [-t target-client]
               (alias: detach)
         Detach the current client if bound to a key, the client specified
         with -t, or all clients currently attached to the session speci-
         fied by -s.  The -a option kills all but the client given with
         -t.  If -P is given, send SIGHUP to the parent process of the
         client, typically causing it to exit.