Grainhouse
Brush
Alt-drag on the canvas to resize. [ and ] work too.
Alt-click a clean spot to copy from, then paint over what you want to hide.
Fills similar connected pixels on the active layer.
Click the canvas, type, then press Enter.
Drag to select. Shift for a square. Brushes, fills and filters stay inside it.
Drag the area to keep. Drag inside it to move it.
Drag to move the active layer.
Click to pick the foreground color. Alt-click picks the background color.
Drag to pan. Hold Space with any tool to pan, Ctrl + scroll to zoom.