I think the only way to draw 4 sides of a map is to create the whole map in 3ds max and then render each view.
Bu it's much easier to create a single sided map. In fact, most new maps in Destination Paris only have 1 side.
The Commandos 3 Y64 file format has too many unknown sections, it's not possible to create new Y64 files for C3 (at least not for the moment).
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