For some programs, you can also switch between fullscreen and windowed
mode at runtime. Standard key shortcut for this is F11.
Start in fullscreen mode with screen resolution changed
to WIDTH x HEIGHT.
If given WIDTH x HEIGHT resolution is not available then error message
will be shown and program will start in fullscreen mode using
current screen resolution.
Start in window mode with given WIDTH and HEIGHT
positioned at (XOFF, YOFF).
<sign> is either "+" or "-".
+XOFF means that left window border should be
XOFF pixels from left screen border. Note that
XOFF itself may be negative (e.g. in
--geometry 100x100+-100+100) and then window will be positioned
slightly offscreen. Similarly, -XOFF means that right
window border should be XOFF pixels from right screen border.
Similar for +YOFF or -YOFF — they specify
distance from upper or lower screen border.
You can omit the <sign>XOFF<sign>YOFF part
and provide only WIDTHxHEIGHT part. You can also omit
WIDTHxHEIGHT part and provide only
This option works the same as standard -geometry option for
most XWindows programs.
Note that window manager may disallow or modify requested
window position and/or size. Note that you can also of course change
window size and position of the window while the program is running
(by dragging window border and such).
(Only on platforms using X Windows, in practice: Unix) Set the XWindows display to use.