Please document code

> Improvements and patches accepted.

I am interested in this module, but I am having to spend a large amount of time understanding how the code works and what everything does -- this module involves by necessity a lot of altering and redirecting of other things, and as such that makes the code quite tangled.

Anyone else in my position is forced to do the same. That's a lot of coder hours.
On the other hand, I hope you still remember what the various functions do (if not... eek!)

What would help would be simple comments like function headers and things like this:

This would help other people understand your module code more quickly, and make them more likely to pitch in with patches.