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Keyboard Structures
Table E-2 ASCII Special Characters
CODE
MEANING
NUL
Null
SOH
Start of Heading
STX
Start Text
ETX
End Text
EaT
End of Transmission
ENQ
Enquiry
ACK
Acknowledge
BEL
Bell
BS
Backspace
HT
Horizontal Tab
LF
Line Feed
VT
Vertical Tab
FF
Form Feed
CR
Carriage Return
SO
Shift Out
SI
Shift In
DLE
Data Link Escape
DCI
Device Control I
DC2
Device Control 2
DC3
Device Control 3
DC4
Device Control 4
NAK
Negative Acknowledge
SYN
Synchronous Idle
ETB
End Transmission Block
CAN
Cancel
EM
End of Medi urn
SUB
Substitute
ESC
Escape
FS
Form Separator
GS
Group Separator
RS
Record Separator
US
Unit Separator
SP
Space
DEL
Delete
NOTE:
These codes are not displayed on the APC as shown. Some of these codes
are not used by the APC, but the unused codes can still be transmitted for
use by other devices.
E-3
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