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A comment on The clever folds that kept letters secret. Parent comment

Re:The clever folds that kept letters secret by BrandoElFollito on Friday June 18, 2021 @01:20PM (#27552642)
Why is it difficult to undo, then redo? Obviously one need to be careful (twice) but that's all
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Re:The clever folds that kept letters secret by bombcar on Friday June 18, 2021 @04:52PM (#27554911)
The key is the adhesive which means you have to tear or otherwise undo it before you can unfold it.

I suspect that much of it was simply “how can we fold the letter” taken to extremes as a form of individual expression.

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