Our gargantuan Xerox copier has a little sensor stapler: you stick the corner of the paper that you want to staple under the staple symbol, and it staples with a rapid ferocity not unlike a Basque rebel biting into a Little Debbi Snack Cake. It will accommodate '50 max.' 51 papers will cause the copier to break down. It is, by far, my favorite piece of office equipment.