How it works
Fire the cannon. Pick the crayon and draw an outline on the stones: the confetti inside it is the
program, and the dot where the crayon touched down is its origin. Drag bits in, out and into place;
bits within 1.5 lengths link up, and a bit on top of another covers it. The ring marks the start
(nearest the dot). Double-click a bit to flick it away. Drag the ground to orbit, scroll to zoom,
right-drag to pan. On a touch screen: one finger turns, two fingers pinch to zoom and slide, and a
double tap flicks a bit away.