Legible Mathematics — Sketches of an interactive arithmetic for programming - http://glench.com/Legible...
"Even these relatively simple equations take some work to decipher. The letters tend to blend together into a jumble of meaningless symbols. Consider an alternative from a prototype programming environment:" - Amit Patel
Soulver, a glorious calculator, incorporates some basic ideas mentioned in the article: http://www.acqualia.com/soulver... - sizofroid‪‪‪‪‪‪‪