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A comment on Show HN: Rainbow – an attempt to display colour on a B&W monitor. Parent comment

Re:Show HN: Rainbow – an attempt to display colour on a B&W ... by pbhjpbhj on Saturday June 27, 2020 @12:49PM (#23662899)
Acetate sheets for use on Over-Head Projectors (OHP), used to come on a plain white backing sheet. The top was glossy smooth, and the back was a little tacky; if you can find those ...
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