Parchment
See Vellum .
Plate
The plate is the prepared surface from which prints are taken.It may be stone, as in lithography, or copper, as in copperplate engraving. The term plate also refers to the actual printed image.
Platemark (plate mark, plate line)
The interface between the paper fibres compressed as the plate was printed and uncompressed fibres that did not get squeezed against the plate as it was printed.
Pocket map
A folding map, generally not linen-backed, usually with self-covers and designed primarily for travellers.
Projection
The means by which the features of the curved surface ofthe earth can be represented on a flat surface.
