Editor Elements
Red
grid lines: The actual game resolution (640X480,240X320,etc.)
Orange grid lines: Actual grid size.
White rectangle: "View Actor".
Yellow rectangle: Activation
Region
Green rectangle:
Wire Frame Region
Blue rectangle:
Filled Region
Cyan rectangle:
Canvas Actor
Gradient Line: Activation Event
White cross: Game center
Pacman: Initial Actor icon
Zoom: +/- or >/< to zoom in or out while in the Game Editor.