Also known as "Continuous Stationery" (one of my Father's customers companies was even called that) because each page was joined via a perforated line or "fanfo

Also known as "Continuous Stationery" (one of my Father's customers companies was even called that) because each page was joined via a perforated line or "fanfold" as it was folded into the box with alternating left-right folds along the perforation just as a paper fan is folded. Often the holes for the tractor feed were also separated from the main part of the page by a perforation so that one could tear it off to leave a more-or-less pristine letter (or A4 over here) page of content. Fiddling with the left-over narrow strips of hole-punched edging paper was one of those universal habits that you don't even notice until long after it's gone. (Edit: _a_ I just realised I replied to the wrong parent post and _b_ now I'm wondering if you're somebody I know!)