(Registered users only:) This is a way to take an instant screeenshot for use in the game description HTML file: It snapshots the current SoliLuxe game screen state and saves it, properly named after the game currently played and in the correct size (480 x 300 pixels) in the /rules subfolder.
While playing, simply press the Numpad 9 key, and the screenshot is instantly created. A dialogue appears asking whether you then actually want the screenshot saved to disk or not.