SYMBOL FOR NULL
SYMBOL FOR END OF TRANSMISSION
SYMBOL FOR ACKNOWLEDGE
SYMBOL FOR VERTICAL TABULATION
SYMBOL FOR CARRIAGE RETURN
SYMBOL FOR SHIFT OUT
SYMBOL FOR DEVICE CONTROL TWO
SYMBOL FOR DEVICE CONTROL THREE
SYMBOL FOR DEVICE CONTROL FOUR
SYMBOL FOR SYNCHRONOUS IDLE
SYMBOL FOR END OF MEDIUM
SYMBOL FOR RECORD SEPARATOR
SYMBOL FOR DELETE