Interesting stuff. Quite a while ago I wrote something vaguely similar using JScript to make a demo of a sort of 'mathematical' document editor as part of the

Interesting stuff. Quite a while ago I wrote something vaguely similar using JScript to make a demo of a sort of 'mathematical' document editor as part of the VB Classic Wikibook, see https://en.wikibooks.org/wiki/Visual_Basic/JArithmetic https://en.wikibooks.org/wiki/Visual_Basic/JArithmetic Might be interesting to revisit the idea.