shift + ⌘ + 3
shift + ⌘ + 4
shift + ⌘ + 4 + space bar
⌥ + ←, ⌥ + →
⌘ + ←, ⌘ + →
⌘ + ↑, ⌘ + ↓
fn + ↑, fn + ↓
fn + backspace
⌥ + backspace
⌘ + backspace