[sterling312]

Too bad it's a queue and not a stack. I'll show myself out now.

[Sirenos]

How is it so? I mean the last paper placed (on top) is the first to be fed to the machine, right? Fits the definition of stack as far as I can see.

[kunil]

Well, I guess it depends on how you insert new pages. If you remove the machine, put new paper and put machine back then it is a stack. If you lift all papers along with the machine then it is a queue. I believe second method looks more convenient unless you have a 5 foot of paper