Or set out a series of lines, then lock them (or put them on a locked layer). The cursor will respond to the lines' intersections.
David
David Maudlin / Architect www.davidmaudlin.com Digital Architecture AC29 USA Perpetual ⢠Mac mini M4 Pro OSX15 | 64 gb ram ⢠MacBook Pro M3 Pro OSX14 | 36 gb ram