theme doc

Is Xaraya_Classic theme documented somewhere?
If not, I might be interested in tackling it but I could use some guidance 
in this
What I'm really looking for is a clear description of the relationships 
betwen styles, how divs are organized, etc.
What classes are core Xaraya? which are specific to Xaraya_Classic?
what would I change if I want to change the look of, for example, comments, 
but not other parts of the theme.
Even for my own notes, I'm having trouble structuring how to document this. 
Perhaps a map? perhaps a set of static html pages (saved from the browser)? 
perhaps there's some xml tools that could be useful?

linoj