Everyday moves

Snapping

Put one window exactly where you want it, with no mode turned on.

Key	Action
`⌃⌥←`	Left half
`⌃⌥→`	Right half
`⌃⌥↑`	Maximize
`⌃⌥↓`	Center, keeping its size. A window filling the screen comes in a little
`⌃⌥D`	Left third
`⌃⌥F`	Center third
`⌃⌥G`	Right third
`⌃⌥Z`	Fill the screen, and press again to go back

These work when Arrange is off or on Auto. On the strip, the arrow keys and ⌃⌥F do strip moves instead.

Change a snap's width

Press a left or right snap again to change its width. "Repeat a left or right snap to change its width" is on by default in Settings > Arrange.

Turn off "Use snapping shortcuts" in Settings > Shortcuts to give those keys back to other apps.