Sense regions allow you to define a rectangular portion of an object that can be selected. For instance, if you were displaying a wiring diagram and three parts on the diagram could be selected for more information, you could use three sense regions to define those parts of the diagram that are selectable.

Sense regions can overlap other objects and can be used to enable or disable a large area of the screen. Sense regions themselves have no graphical contents or visual appearance; they cannot display frame style attributes, and they cannot have children.