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RGB is the model used to project color on a computer monitor. By mixing these three colors, a large percentage of the visible color spectrum can be represented.

Type that is justified to the right margin and the line lengths vary on the left.

Type that is justified to the left margin and the line lengths vary on the right.

A term used in page layout software to describe the pairing of pages on the computer display. Pages are grouped in numerical order as a reader would encounter them while reading2 paired with 3, 4 paired with 5, etc. This is contrasted to printer spreads which describe the pairings as they may occur on a printing press before the binding of the book.

Five hundred sheets of paper.

To position print in the proper position in relation to the edge of the sheet and to other printing on the same sheet.

Cross-hair lines or marks on film, plates, and paper that guide strippers, plate makers, pressmen, and bindery personnel in processing a print order from start to finish.

The crispness of detail or fineness of grain in an image. Screen resolution is measured in dots by lines (for example, 640 x 350); printer resolution is measured in dpi (for example, 300 dpi).

Spaces between words that create irregular lines of white space in body type, particularly occurs when the lines of type have been set with excessive word spacing.