IBM 4400 manual Appendix D

Appendix D

	C
Character	A graphical representation of data.
Character cell	The invisible rectangular space occupied by a
	character, including the white space around the
	character. Used as a unit of spacing. The height of a
	cell is equal to the current line spacing, and the width of
	a cell remains constant even with changes in the
	current character spacing.
Character Library	The collection of all the glyphs for all fonts.
Character Location	The location of a character in a font. The location of a
	character is the same in all fonts.
Character set	A protocol instructing the printer how to construct a set
	of printable characters, including symbols, punctuation,
	numbers, diacritical markings, and alphabet characters.
	Each character is assigned a unique address in
	memory.
Character weight	The degree of lightness and thickness of printed text.
	For example: Bold refers to a heavy or thick character
	weight. Medium, normal, or book weight refer to the
	character weight used in this sentence.
Code Point	A value between 0 and 256 that defines the location of
	a character within a character set.

Command sequence Two or more bytes that instruct the printer to perform a special function. The first character in the sequence is a Special Function Control Character (SFCC), which alerts the printer that the string is a command sequence. (See also SFCC.)

Compressed	A font attribute referring to a typeface with a smaller
	than normal character width, but no change to
	character height.
cpi	characters per inch: a measurement of monospaced
	fonts indicating the horizontal character density. For
	example, 10 cpi is 10 characters produced in a one-
	inch (horizontal) space.

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