dbl-click card = open · dbl-click dimmed = back ·
drag empty = pan ·
shift+drag = new box · drag box = move ·
drag handle = resize ·
drag blue dot = rotate label (shift = 15°) ·
scroll zoom ·
L labels / P cards ·
Del remove ·
C/U claim/unclaim ·
⌘/Ctrl+C/V copy/paste ·
⌘/Ctrl+Z/Y undo/redo ·
S save · [/] page ·
A clear card's labels ·
▤ amber = unassigned ·
┄ cyan = auto-expand ·
● magenta = explicitly claimed