Usage: cscreen [-d <depth>] [-x <width>] [-y <height>] [-r <refresh>] [-s <display>] [-v] [-m] [-f] [-l] [-h]
[-d <depth>] : specifies the bit depth (bits per pixel)
[-x <width>] : specifies the width in pixels
[-y <height>] : specifies the height in pixels
[-r <refresh>] : specifies the refresh rate in Hz
[-s <display>] : specifies which display to use (defaults to main display)
use a as the option to -s to specify the action on all displays
[-i <displayID>]: picks a display based on CGDirectDisplayID (permanent per display)
continue to use '-s a' for "all displays"
[-v] : display valid modes (use -s to specify display or nothing for the default)
[-m] : require an exact match
[-f] : forces settings (ignores safety mechanisms; USE AT YOUR OWN RISK)
[-l] : lists the current displays and modes
[-p] : sets the requested display to have the menu bar
[-h] : displays the usage
Note: Using -p will change the display index so you will likely want to use -l again to show the current
displays if you wish to use -p a second time.