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6287 ULTRA Users ManualPage 19-4
DisplayWrite 370 An IBM word processing application
that supports bolding, underlining and
overstriking.
DPA Display printer adapter.
DSC Data stream compatible. A pre-SNA
protocol.
E
EAB Extended Attribute Buffer. A feature
found in many IBM printers that
extends the number of characters
available for transmission to the printer.
EBCDIC Extended Binary Coded Decimal
Interchange Code. An eight bit
character code.
EC Establishment controller.
EM character End of message marker.
Emulation A hardware or software product
imitating the function of another
hardware or software product.
End of Message A character that represents the last
character of a message.
EPROM Erasable programmable read-only
memory. The storage medium for the
ULTRA firmware.
Esc Escape control character. A non-graphic
(unimaged) code that signals the
transmission of control information to
the ULTRA.
Establishment controller See cluster controller.
Exception condition A printing problem in an SNA
environment.
Extended ASCII Some printer manufacturers have
implemented their own version of 8 bit
transmission. Extended ASCII allows
128 additional characters to be
displayed by the printer.