The packaging is the Internet address of the manufacturer, where you can download a template for MS Word. The template holds directly the distances of the cover sheet so you can print his subjects on a sheet of A4 paper.
The A4 sheet is then stapled behind the cover sheet and the printed text fits perfectly into the gaps of the topsheet.
The pages themselves are made of a sturdy plastic. I think that is also for daily use, not easy to wear (the holes register a tear etc.)
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