+.Pp
+.Nm
+also automatically assigns quirks to windows based on the value
+of the window's _NET_WM_WINDOW_TYPE property as follows:
+.Pp
+.Bl -tag -width "_NET_WM_WINDOW_TYPE_TOOLBAR<TAB>XXX" -offset indent -compact
+.It _NET_WM_WINDOW_TYPE_DOCK
+FLOAT + ANYWHERE
+.It _NET_WM_WINDOW_TYPE_TOOLBAR
+FLOAT + ANYWHERE
+.It _NET_WM_WINDOW_TYPE_UTILITY
+FLOAT + ANYWHERE
+.It _NET_WM_WINDOW_TYPE_SPLASH
+FLOAT
+.It _NET_WM_WINDOW_TYPE_DIALOG
+FLOAT
+.El
+.Pp
+In all other cases, no automatic quirks are assigned to the window.
+Quirks specified in the configuration file override the automatic quirks.
+.Sh EWMH
+.Nm
+partially implements the Extended Window Manager Hints (EWMH) specification.
+This enables controlling windows as well as
+.Nm
+itself from external scripts and programs.
+This is achieved by
+.Nm
+responding to certain ClientMessage events.
+From the terminal these events
+can be conveniently sent using tools such as
+.Xr wmctrl 1
+and
+.Xr xdotool 1 .
+For the
+actual format of these ClientMessage events, see the EWMH specification.
+.Pp
+The id of the currently focused window is stored in the _NET_ACTIVE_WINDOW
+property of the root window.
+This can be used for example to retrieve the
+title of the currently active window with
+.Xr xprop 1
+and
+.Xr grep 1 :
+.Bd -literal -offset indent
+$ WINDOWID=`xprop \-root _NET_ACTIVE_WINDOW | grep \-o "0x.*"`
+$ xprop \-id $WINDOWID WM_NAME | grep \-o "\\".*\\""
+.Ed
+.Pp
+A window can be focused by sending a _NET_ACTIVE_WINDOW client message
+to the root window.
+For example, using
+.Xr wmctrl 1
+to send the message
+(assuming 0x4a0000b is the id of the window to be focused):
+.Bd -literal -offset indent
+$ wmctrl \-i \-a 0x4a0000b
+.Ed
+.Pp
+Windows can be closed by sending a _NET_CLOSE_WINDOW client message
+to the root window.
+For example, using
+.Xr wmctrl 1
+to send the message
+(assuming 0x4a0000b is the id of the window to be closed):
+.Bd -literal -offset indent
+$ wmctrl \-i \-c 0x4a0000b
+.Ed
+.Pp
+Windows can be floated and un-floated by adding or removing the
+_NET_WM_STATE_ABOVE atom from the _NET_WM_STATE property of the window.
+This can be achieved by sending a _NET_WM_STATE client message to the
+root window.
+For example, the following toggles the floating state of
+a window using
+.Xr wmctrl 1
+to send the message (assuming 0x4a0000b is the id of the window floated
+or un-floated):
+.Bd -literal -offset indent
+$ wmctrl \-i \-r 0x4a0000b \-b toggle,_NET_WM_STATE_ABOVE
+.Ed
+.Pp
+Floating windows can also be resized and moved by sending a
+_NET_MOVERESIZE_WINDOW client message to the root window.
+For example,
+using
+.Xr wmctrl 1
+to send the message (assuming 0x4a0000b is the id of
+the window to be resize/moved):
+.Bd -literal -offset indent
+$ wmctrl \-i \-r 0x4a0000b \-e 0,100,50,640,480
+.Ed
+.Pp
+This moves the window to (100,50) and resizes it to 640x480.
+.Pp
+Any _NET_MOVERESIZE_WINDOW events received for stacked windows are ignored.
Got questions, comments, patches, etc.? Contact Jason Woofenden