Toggle General Features
Ctrl+d Toggle coordinate display
Ctrl+g Toggle Grid
Ctrl+e Cycle isometric planes
Ctrl+f Toggle running object snaps
Ctrl+h Toggle Pick Style
Ctrl+Shift+h Toggle Hide pallets
Ctrl+i Toggle Coords
Ctrl+Shift+i Toggle Infer Constraints
Toggle Drawing Modes
F1 Display Help
F2 Toggle text screen
F3 Toggle object snap mode
F4 Toggle 3DOsnap
F5 Toggle Isoplane
F6 Toggle Dynamic UCS
F7 Toggle grid mode
F8 Toggle ortho mode
F9 Toggle snap mode
F10 Toggle polar mode
F11 Toggle object snap tracking
F12 Toggle dynamic input mode