arrows to scroll
ctrl + LEFT or RIGHT to rotate ; ctrl + LEFT + RIGHT to reset rotation
ctrl + UP or DOWN to zoom ; ctrl + UP + DOWN to reset zoom
space bar (once) to enter in 'car mode' (then left/right arrows act as 'rotate')
ctrl + I to get informations on CPU & memory consumption
ctrl + D to see in real time dirty rectangles (ie. parts of the screen that need to be updated; be careful: consumes lot's of CPU !)
key R to rotate the sprite attached to the mouse around its hotspot
key H to move the hotspot inside the sprite attached to the mouse.