> What can changes to pvengine.c do that other patches don't do? I
> notice that for most patches you modify parse.c (or something like that, I
> don't know exact file names).

pvengine.c is related to the windows specific code, so it handles things like
the display and interface.  It's really big and complicated. :)

The reason most patches require modifications to parse.c (and frame.h and
tokenize.c) is that the parser reads in the data for different keywords in the
scene file.  Adding a new keyword means you have to add it to the files
associated with the parser.

-Mike

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