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 "first-page-first", 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.