For placement only.
(For Position Only) A low-resolution image used to mark the placement of the final image. During the draft stages of a publication, FPOs are often used instead of the high-resolution images, which take up a significant amount of storage. When the publication is finally printed, the FPOs are replaced with the high-res images.
(u.s. navy) Fleet Post Office.
Fleet post office.
Fleet Post Office (mailing address for Navy and Marines, sometimes APO is substituted.)