But it works anyway. I needed to chop up a series of "barium swallow" movies into separate flip-card images, so that my teaching-machine program can use them properly. But after looking at the flipped result, I realized that they needed some indication of which frame is currently showing. This really should be a job for a 2D program; mix the layers. But I couldn't see doing it all by hand... there are 6 movies, each with about 30 images .... so I found a way to let Poser handle it.

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