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A comment on Paper is the real 'killer app'. Parent comment

Re:Paper is the real 'killer app' by stan_rogers on Monday January 23, 2017 @02:34PM (#13465176)
Erasable pens for overhead transparencies. They're not expensive at all, and most decent stationers would have them.
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Re:Paper is the real 'killer app' by PetitPrince on Monday January 23, 2017 @06:43PM (#13467378)
While those works, they can leave some traces. The guy behind Wipebook made a video about it [1]. See also the Tips and Tricks videos from the same company [2] [3]

[1]: https://www.youtube.com/watch?v=m-hE6VDAG_I

[2]: https://www.youtube.com/watch?v=fQtGd0YkMos

[3]: https://www.youtube.com/watch?v=y_PWw7G1jfg

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