| ` / 6…9 | Final engraving |
| 1…3 | Tone · Contours · Hatching |
| M | Paint mask (there, C clears it) |
| C | Crop & keystone: drag the rectangle, its corners and edges; turn it by a corner's outside or Shift+wheel; double-click it = the whole photo. The cut goes into 1 Tone. |
| E | contours on / off |
| X (hold) | peek at the original photo |
| Wheel | zoom fit…1:1, anchored at cursor |
| Z | toggle fit / 100% |
| Space+drag | pan (also middle-drag) |
| O | open a photo (or drop on the page) |
| ⌘/Ctrl+V | paste an image |
| D | download full-res JPEG |
| Shift+D | download full-res PNG (print) |
| Save… | save preset + copy settings JSON |
| Right-click presets | paste settings JSON |
| Drag | paint: ●↓ darken darks · ○↓ darken lights · ◐+ Equalize |
| ⌥/Alt (hold) | invert: lighten darks · lighten lights · Unequalize |
| [ ] | brush size |
| Shift+wheel | brush strength |
| Shift+drag | 4× brush strength |
| Pen pressure | scales strength |
| L | auto tone: levels, contrast & equalize from image stats |
| ⌘/Ctrl+Z | undo |
| ⇧⌘Z / Ctrl+Y | redo |
| ? | toggle this sheet |
| Esc / click outside | close |