Am 05.01.2013 10:48, schrieb denis.beurive:
>
> I try to deeply understand the PovRay's grammar.

Frankly there's not much to deeply understand. POV-Ray's parser is a 
kludgy old incoherent mess, and while there are structures that /seem/ 
to form a common pattern among all the statements, there are probably 
exceptions to each and every one of them. There's absolutely no hidden 
core grammar to be found in there, everything is in the individual 
statements (except for the tokenization rules, but they're quite 
straightforward).

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