is a utility for forcing the X server to close connections to clients.
This program is very dangerous, but is useful for aborting programs that have
displayed undesired windows on a user's screen. If no resource identifier
is given with -id, xkill will display a special cursor
as a prompt for the user to select a window to be killed. If a pointer button
is pressed over a non-root window, the server will close its connection to
the client that created the window.
This option specifies the name of the X server to contact.
This option specifies the X identifier for the resource whose creator is
to be aborted. If no resource is specified, xkill will display a
special cursor with which you should select a window to be killed.
This option specifies the number of pointer button
that should be used in selecting a window to kill.
If the word ``any'' is specified, any button on the pointer may be used.
By default, the first button in the pointer map (which is usually the
leftmost button) is used.
This option indicates that all clients with top-level windows on the screen
should be killed. xkill will ask you to select the root window with
each of the currently defined buttons to give you several chances to abort.
Use of this option is highly discouraged.
This option indicates that xkill should ignore the standard
conventions for finding top-level client windows (which are typically
nested inside a window manager window), and simply believe that you want
to kill direct children of the root.
Specifies a specific pointer button number or the word ``any''
to use when selecting windows.