3ds Max Hotkeys

; - repeat last(poly)
shift + e - extrude face
alt + a - align
7 - show statistics (面數..)

ctrl + X - show/hide tool UI
alt + X - enable X-ray previews

Selection
1~6 - sub-obj level (vertex, edge, border, poly, element, top-lvl)
alt + Q - isolate selection
alt + L - Edge Loop
alt + R - Ring Loop
ctrl + PageDown - 選取所有階層下的物件

Animate
' - set key mode

Time Slider
/ - play
, . - forward and backward 1 frame

Render
shift + Q - render