2
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pen
Erase Drawing
Are you sure you want to erase your current drawing?
About blackboard
v 2
New Version
Coming soon: circles and sinusoidal functions.
For the old version, click here.
| Hot Key | Action |
|---|---|
| 0-9 | Switch colors |
| r | Erase drawing |
| p/g/l/c/s | Switch tool |
| h/v | Horizontal/Vertical pen |
| Shift ↕ | Change pen size |
| Shift | Lines at common angles |
| Ctrl | Outline pen |
| ↕ | Change grid size |
| Enter | Confirm tool result |
| Esc | Cancel tool result |
| Ctrl+z/y | Undo/Redo |
| i | Show about |
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