The classic Sinclair computer logo is formed on a highly regular grid. Each glyph is defined by intersections of just two vertical and three horizontal grid lines. The constraint is analogous to seven-segment LED displays: a fixed set of possible positions forces each letterform to its most essential shape.

I present a new toy that provides an interactive page that parameterises that grid - and the path taken around through it - so you can explore and produce variants of the logo in real time: