Keyboard: click the board, then use the arrow keys to move, Q and E to turn, Delete to remove. Right mouse button or two fingers pan the view.
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Add a figure
Selected figure
Click a figure on the board to edit it.
Display
The board separates along its wavy seam. Figures stay on their half, so you can show two systems or a separation.
Constellation snapshots
Save the initial constellation before you rearrange it, so you can switch between the initial and the solution constellation later.