1) Desktop publishing precursor 2) InDesign predecessor 3) Mechani-cal 4) Old layout work 5) Pre-computer page design 6) Prepare a page layout 
The process of pasting up. Also, alternate term for Mechanical.
The assemblage of pages by pasting type onto page mockups, which are then photographed to be made into metal plates for the printing press. (courtesy of John E McIntyre)