Options for positioning the cursor
1means that your cursor will snap to the grid lines,
0.5will also snap halfway between them,
Offwill not snap to the grid lines.
Onwill snap to the ends of previously drawn lines or arcs,
Whether the line and arc tools should snap to particular angles in increments of
This is so that angled lines can snap to particular lengths.
1corresponds to the size of one grid cell. Can also be