View
Zoom in/out: mouse_wheel
Pan the view: right_click [hold] + drag

Point/Edge Controls
Move: left_click [hold] + drag
Add: SHIFT [hold] + left_click
Remove: SHIFT [hold] + middle_mouse
Change type: SHIFT [hold] + left_click

Quad Controls
Move: left_click [hold] + drag
Scale: S [hold] + drag [up/down]
Rotate: R [hold] + drag [left/right]