IBM 4400 manual Sentence is set in italics

	I
ipm	inches per minute: The speed at which graphics are
	plotted.
Interface	The hardware components used to link two devices by
	common physical interconnection, signal, and
	functional characteristics.
International
Language	Character set in which characters have been
	rearranged according to a substitution table for use in a
	different country.
Invoke	To put into effect or operation.
Italic	A type style in which characters are slanted. This
	sentence is set in italics.

	L
lpi	lines per inch: a measurement indicating the vertical
	spacing between successive lines of text. For example,
	8 lpi is 8 printed lines per vertical inch.
lpm	lines per minute: A measurement indicating the number
	of lines printed per minute. (lpm usually defines the
	speed at which text prints.)

M

Memory See RAM.

N

Nonvolatile memory Nonvolatile memory stores variables that must be preserved when the printer is turned off, such as configuration parameters and printer usage statistics. Nonvolatile memory is preserved because RAM is housed on the controller board, which contains an independent, battery-operated power supply. When printer power is turned off, the battery supplies the power needed to keep stored data active. Nonvolatile memory also includes storage on disk.

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