About Documentation and code clean-up

I am certain that a lot of you who see my code and my svn comments that I have a lot of commits stating that the purpose of the commit is for documentation and code clean-up. I will now attempt to clear up what that means:

Documentation: Going through the code line-by-line and adding summary tags as well as commenting sections of code that may be harder to follow then others.

Code clean-up: Going through the code line-by-line and determining what areas are not essential and which ones could be improved. This is also when I run the FX-COP and Style-COP on the code and make the necessary corrections.