grabScreen should return an Image object containing a screenshot data of a systems main screen as well as its dimensions
Returns the same result as grabScreen, but limited to a specified region
Highlights a screen Region for a given duration by overlaying it with an opaque window
screenHeight returns a systems main screen height
screenSize returns a Region object the size of a systems main screen
screenWidth returns a systems main screen width
grabScreen should return an Image object containing a screenshot data of a systems main screen as well as its dimensions