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When I was in college they would use a transparency projector, but instead of transparency pages, there would be a roll with a crank that you would turn to adva
by dtjohnnymonkey 2y ago
When I was in college they would use a transparency projector, but instead of transparency pages, there would be a roll with a crank that you would turn to advanced the roll. You would get the same effect as slipshow.
- DowagerDave 2y ago...and if they went too fast the hand smudges and wrapping would make previous content indecipherable when they rolled it back :)