Tally Genicom T5023+ - Manual (Page 55)

Standard commands Controlling the configuration of the printer
T5023/5023+ - Programming Guide 45
Result:
BEGIN
PRINT(char(27),"U",char(0)) <-- bidirectional on
PRINTLF("bidirectional printing")
PRINTLF("bidirectional printing")
PRINTLF("bidirectional printing")
PRINT(char(27),"U",char(1)) <-- bidirectional off
PRINTLF()
PRINTLF("unidirectional printing")
PRINTLF("unidirectional printing")
PRINTLF("unidirectional printing")
END