From <a href="http:&#x2F;&#x2F;www.hp9845.net&#x2F;9845&#x2F;software&#x2F;screenart&#x2F;wargames&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.hp9845.net&#x2F;9845&#x2F;software&#x2F;screenart&#x2F;wargames&#x2F;</a><p>&gt;the frames were created one at a time on a high resolution vector display and recorded onto film. The display was monochromatic, so color separations had to be done and filters were rotated in front of the camera.<p>What you see in the movie has a lot of analog post processing on film as was typical of the era.