maintaining default floating window behavior.
Possible stack_mode values are
.Pa vertical ,
-.Pa horizontal
+.Pa vertical_flip ,
+.Pa horizontal ,
+.Pa horizontal_flip
and
.Pa fullscreen .
.Pp
Note that many terminal emulators require this to be enabled for it to
propagate.
In xterm, for example, one needs to add the following line
-.Pa xterm.urgentOnBell: true
+.Pa xterm.bellIsUrgent: true
to
.Pa .Xdefaults .
.It Ic verbose_layout