Pantone - a registered name for an ink color matching system. After the printed sections having been collated, the spines will be ground off and the cover glued on. There are 12 points to a pica, one pica is approximately 0.166in. PMS - Pantone Matching System. A commonly used system for identifying specific ink colors.
Point size is the measured from the top of the ascender to the bottom of the descender.
PostScript - a page description language developed by Adobe Systems, often used when printing out circuit boards, or preflight jobs. Marks are placed both in the text and in the margin. When the required function has been selected the menu rolls back up into the menu bar leaving the screen clear.