[NTG-context] The Context styles library.

I am going through the Context styles library (colo-ini.tex and friends) to figure out what the various files do. A portion of them come with sample demo code and a smaller portion of the demos work on my system. Am I reinventing the wheel? Is there a document somewhere that says: ``This is what these examples are all about''? I know that there are comments at the head of each file but these can be a bit terse. Not a priority question :-) John Culleton