verbiage, we like

[fiefoe]

Why must an EPS file be a single-page file?
 
Some computer systems and applications allow you to create a multi-page "EPS" file - BUT you should be aware that such a file is not truly an EPS file, it is just a PostScript file.
Why?
Because - think about it - an EPS file is intended to be imported by an application and placed on a page in a document that is being created by that application. How can you place more than one page on a page?
The answer is, "You can't. It doesn't make sense to think of putting more than one page on a page."
That's why an EPS file is - by definition - a one-page file.

(courtesy of Andy N.)