A common abbreviation for Front Free EndPaper. Generally, it
is the first page of a book and is part of a single sheet that also
spans across the inside of the front board (called the front pastedown) via a fold along the gutter with the purpose of connecting the boards to the stitched textblock.
As
a result of this purpose, the paper quality of the ffep is generally of
a heavier weight than those used for the pages of the book, and is
often decorative.