A ARC / Creates an arc
AA AREA / Calculates the area and perimeter of objects or of defined areas
AL ALIGN / Aligns objects with other objects in 2D and 3D
AP APPLOAD / Load Application
AR ARRAY / Creates multiple copies of objects in a pattern
Ctrl+E Toggle coordinate display
Ctrl+E Cycle isometric planes
Ctrl+F Toggle running object snaps
Ctrl+H Toggle Pick Style
Ctrl+Shift+H Toggle Hide pallets