Mouse Controls
| Colour tile BLACK | |
| Colour tile WHITE | |
| Colour tile GREY (unknown) | |
| Ctrl+ | Colour tile GREY (unknown) |
| +Drag | Fill rectangular region |
| Hold Shift | Cancel current mouse action |
Touch controls
| Tap | Cycle tile GREY→BLACK→WHITE |
| Tap+Hold | Cycle tile GREY→WHITE→BLACK |
| Tap+Drag | Fill rectangular region |
| Tap 2nd finger | Cancel current touch action |
Keyboard controls
| Ctrl+Z | Undo last action |
| Keyboard control coming soon |