Hotkeys

Scratch is keyboard-first. The set is intentionally small.

Action	Shortcut
Toggle window	⌃⌥⌘ Space
Settings	⌘ ,
Quit	⌘ Q

The toggle hotkey is global — it works whether or not Scratch is the frontmost app. The exact binding will be configurable; the default reserves a chord unlikely to collide with system or app shortcuts.