Iirc, Heretic and Hexen weren't under the GPL license but under a more restrictive license, and I was wondering if Vavoom used code from it, or have it's own in ways like the Strife emulation.
Doom Legacy has a similar case but they're using actual Heretic code
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Just curious <!-- s;) --><img src="{SMILIES_PATH}/icon_wink.gif" alt=";)" title="Wink" /><!-- s;) -->