Code Documentation

Business owners seldom see:

(1) The business requirements met by the code.

(2) The extent of the source code documentation.

(3) The quality of the comments (i.e., direction for future maintainers versus profanity, song lyrics, or obscure references).

(4) The time it takes to document code and its added business value.

I would like to see an editor that links, rather than embeds, source code comments with documentation, while allowing the documentation to be extracted independently. Such as:

http://www.youtube.com/watch?v=u3QqjhzhnAw#t=1m41s

I'd be interested to know what a lot of these projects are. That graph suggests that there are a good number of projects that have > 90 comment lines per 100 lines, which just seems absurd.

Do they count perl one-liners where there is a huge amount of functionality packed into a single line, with a big comment above it explaining what it does?