Hi,
I'de like to add a new operator mdistance to Povray. mdistance returns a DBL
and takes three mandatory arguments: an Object (as the same kind of
Parse_Inside), a VECTOR and a number (integer or float, it's almost the
same for me).

I have to modifiy express.cpp and tokenize.cpp.

Are there other files that I have to modify for letting povray recognize the
new operator?

Another question: povray use a strange system for parsing (EXPECT, etc.) ...
Is there anything documenting this?

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