Long description

The image shows graph paper with a large box outlined, containing nine smaller boxes within, which are not outlined. In each of the smaller boxes, nine Z-like shapes, with arrows leading from the final stroke, illustrate how the program fills the canvas: from the upper left-hand square to the upper right-hand square, the upper right-hand square to the lower left-hand square, and the lower left-hand square to the lower right-hand square. This continues into the next rosette in the row until the row is filled, before moving onto the second row, and so on.