PEN — click: corner point · click+drag: smooth point · near existing path: add vertex · Enter/dbl-click finish · click first vertex to close

GRADIENT — drag A→B · A end = 0, B end = full strength

click add/select · drag move · alt+drag duplicate · right-click delete · wheel zoom · shift+wheel radius · space+drag pan · ctrl+z undo · ctrl+d dup

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