SYMBOL FOR NEGATIVE ACKNOWLEDGE
SYMBOL FOR END OF TEXT
SYMBOL FOR ACKNOWLEDGE
SYMBOL FOR BELL
SYMBOL FOR BACKSPACE
SYMBOL FOR LINE FEED
SYMBOL FOR VERTICAL TABULATION
SYMBOL FOR FORM FEED
SYMBOL FOR DEVICE CONTROL ONE
SYMBOL FOR DEVICE CONTROL TWO
SYMBOL FOR DEVICE CONTROL THREE
SYMBOL FOR DEVICE CONTROL FOUR
SYMBOL FOR SYNCHRONOUS IDLE
SYMBOL FOR UNIT SEPARATOR
SYMBOL FOR NEWLINE