I'm using Maple 16 for OS X (on Lion). The way Maple handles highlighting is very strange; if I want to highlight (and copy or delete) part of an expression, or maybe something nested within a command, it frequently highlights things I don't want it to and never put my cursor near. I expect it's trying to be smart and predict what I want to select, but quite often it makes it impossible for me to do what I actually need to, causing even more hassle. Usually if I want to delete...

I have a collection of functions defined either in terms of a single variable - call it r - or in terms of (r and) the other functions of r.

To be more specific, there are two free functions B(r) and N(r), a function theta defined in terms of N(r) and B(r) (and their derivatives) and r, and a free function V(theta).

Finally I have a function, call it f, written in terms of B(r) and N(r) (and their derivatives), r, and V(theta) and its derivatives with respect to both theta and r.