QMS 2425, Reference

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Typeface Family
A group of related typefaces. For example, the Times typeface family
consists of four typefaces: Times Roman, Times Bold, Times Italic, and
Times Bold Italic. See also font and typeface.
Utility
A program that performs a specific function of computer system manage-
ment, such as maintaining disks and files or controlling a peripheral device.
Virtual Memory
An extension to the effective size of the printer’s memory by using a disk
file or swap file to simulate additional memory space. It enables the hard
disk to accept data swapped from RAM to free temporarily the RAM for
other tasks.
Volatile Memory
Memory that is cleared when the printer is turned off. Most RAM is volatile.
XON/XOFF
Control characters used for flow control in data transmission.
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