Key

4, 6, 8, 2

Rotate LEFT, RIGHT, UP, DOWN, in 10 degree steps.

Ctrl gives 45 degree steps.

Shift gives 1 degree steps.

Ctrl with Shift gives 4.5 degree steps.

Page Up

Zoom in on view center (zoom by 1.5).

Ctrl speeds up to zoom by 2.5.

Shift slows down to zoom by 1.2.

Page Down

Zoom out on view center (zoom by 1.5).

Ctrl speeds up to zoom by 2.5.

Shift slows down to zoom by 1.2.

Home

Zoom fully out to view limits.