What's the meaning of "first-page-first order"? Recently I prepared to submit to a conference of IEEE. In the requirements of submission, it indicated that:

PDF and Postscript files:

must not have Adobe Document Protection or Document Security enabled,

must have either 'US Letter' or 'A4' sized pages,

must be in first-page-first order, and

must have ALL FONTS embedded and subset.



I have searched for the phrase of &quot;first-page-first&quot;, but still did not have an idea of it (sorry my first language is not english).
If anyone can tell me what's the meaning of it exactly I would be very grateful.
I am pretty sure this is just a ridiculously dated instruction. On some older printers, the pages were ejected print side up and new pages were added to the top. This means that the first page printed would end up being the bottom page of the document when you picked it up. If you then wanted to staple the document in the correct order, you needed to reorder everything. With these printers it was much more desirable to print "back-to-front" such that when you pick up the document from the printer everything is in the "correct" order. Some computers provided (and maybe some still do) the option to print "back-to-front" to avoid this. Some people conceivably, though I have never seen it, produced documents in a first-page last order to help with the printing. I think this instruction just means that the pages should go in the order you expect them in: the first page of your pdf should be page 1 and the last page N. In a first-page-last order the first page would be N and the last page 1, which would be really awful to read on screen.