openGL documention?

hello,
lately is was experimenting a bit with ruby-opengl,
It works a little bit and I found a few things already,
but It would go much faster with documentation the examples only is not
enough plus not evrything is there problably.
I did found a very good guide on GLprogramming.com but it was for normal
opengl not the ruby one, most of the things said there are usefull, but
there are also a lot of things I cannot get to work as they say it
should with ruby-opengl.
does somebody now if there is anything like documentation of rubyopengl
or a reference or something or better #commented examples.

thanks in advance
bas wilbers


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