An HFS list?

I know how to extract hfs files and whatnot, but I've been meaning to ask. Is there, or has anyone created, a list of what is exactly inside each and every hfs file? (if a thread like this has already been created, please let me know and I apologize in advance) I've been wondering since I would like to mess with specific items. If anyone could let me know, that would be great.
Thank you.

There is nothing like that atm. I hope you know that you cant use modified HFS files anymore.