⊕ drop image as brush

A — draw    B — erase
F — fill    I — eyedrop
Q — rect select    L — lasso
O — ellipse    W — move
T — scale    Esc — deselect
[ / ] — size    Z/X — opacity
R/E — rotation    G/D — grow/shrink
Space — quick select / sel→brush
Ctrl+Z — undo    Ctrl+Y — redo
Ctrl+A — select all    Ctrl+C/X — copy/cut
MMB drag / Wacom btn — pan
Scroll — zoom to cursor