An area part 'consumes' the targeting cursor. Any part inside of it, ie where you need to traverse some of the area to reach the specified target, cannot be targeted with the mouse.
for example,
above my mouse is over the button but the area around it consumes the mouse target
Main Points
An area part 'consumes' the targeting cursor. Any part inside of it, ie where you need to traverse some of the area to reach the specified target, cannot be targeted with the mouse.
for example,
above my mouse is over the button but the area around it consumes the mouse target