Agilent Technologies 6287 manual PA1, PA2, Pfs

GLOSSARY	Page 19-9
Normal operating mode	The ULTRA mode in which host data
	may be accepted.
Null	X'00.' Output by the ULTRA as a space.
Null line	A line in the data stream containing
	only null characters.
O
One-trigger	A form of pseudo transparency that
	uses a single trigger character followed
	by a count byte that indicates the length
	of the escape sequence.
Option	An ULTRA configuration parameter for
	which the user can make a choice.
Output	Data transferred from a computer’s
	internal storage to an output device.
Output device	A unit that takes data output from a
	computer and presents it in the form
	desired by the user.
Overstrike	A DisplayWrite 370 function in which
	two characters may be printed in the
	same presentation position.
P
PA1	Program attention key 1.
PA2	Program attention key 2.
Page control	The method by which page boundaries
	(margins) are determined. Page control
	may be done either by the host
	application or by the ULTRA.
Parallel interface	8 bits of a byte are transmitted
	simultaneously through 8 parallel wires.
Parity	A bit added to a data word that is used
	for error checking. Simple parity can be
	either odd or even.
PFS	Programmable function string.