As long as you're not using any Valve code, you're perfectly all right.  If
you can figure out the file format (and I've no doubt that it's perfectly
easy; I just wouldn't bother personally) and write your own functions to
read them, you're good to go.

> It really depends on the format.

> For example (IIRC) if you write a program that outputs a GIF you need
> to get permission (pay) to release it. If you write a program that
> reads mp3's you need to get a license from Thompson something (I
> think).

This is a slightly different issue.  GIFs and MP3s require royalties
because they are *patented*.  (Don't get me started on software patents
:-P)  And BTW the GIF patents expired just recently, in the US.  IIRC the
issue was actually the LZW compression they used.

> You really need to email Valve for permission. I don't think they'll
> have a huge problem with it since it will support the development of
> other tools - but best check.

A good idea in any case.  I don't see why they would have a problem with
it, but it's polite to ask anyways.

Cheers
-John Sheu

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