Robert Harris

the extent() property nicely bounds the verticals for the chart, but it doesn't account for labels and paths which happen to appear outside of the area bounded by those verticals....

currently when you mouse over a dot, the transformed expression is presented. it can be hard to identify what exactly is going to happen without careful inspection. surely there is...

add a way to specify options. for example: - expand tree to show only nodes with actions - expand tree but omit leaf nodes without actions - toggle on/off certain...

spotting: ``` a(b + c) -> ab + ac ``` is easy. spotting: a(n1 + n2 + n3...) -> an1 + an2 + an3 ... is a bit tricker.

create a list of math identities which will get an algebra I student through the year.

sometimes two patterns will perform nearly the same action, and one may be preferable to others. for example: sqrt(x) == y -> x = y ^ 2 is prefered over:...

if the users performs some transform, and in the new expression there is an option which will simply take you back to where you were before, well that is a...