Lexmark Optra T Reference page 154

parameter
PORT
The following ports are valid parameters for LESCAPECHAR:
•
INA
•
INA1
•
INA2
•
INA3
•
LOCALTALK1
•
LOCALTALK2
•
LOCALTALK3
•
PARALLEL
•
PARALLEL1
•
PARALLEL2
•
PARALLEL 3
•
USB
•
USB1
•
USB2
•
USB3
•
SERIAL
•
SERIAL1
•
SERIAL2
•
SERIAL3
•
IR
•
IR1
•
IR2
•
IR3
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PJL