A Printing Proof produces one or more jpg files or single-page pdf files, or a multipage pdf file suitable for test prints.
Choose to render only to the trim line, or extend to include the bleed area and crop marks as well.
Render the pages as full double spreads, or split doubles into sides.
If using the PDF option, choose to render as a single pdf file for all pages, one pdf file per page, or to split the cover and interior pages into two files.
The rendered pdf will be saved to Documents\Memento\Projects\Proof PDF by default.