SYMBOL FOR NULL
SYMBOL FOR START OF HEADING
SYMBOL FOR START OF TEXT
SYMBOL FOR ENQUIRY
SYMBOL FOR BACKSPACE
SYMBOL FOR HORIZONTAL TABULATION
SYMBOL FOR VERTICAL TABULATION
SYMBOL FOR DATA LINK ESCAPE
SYMBOL FOR DEVICE CONTROL ONE
SYMBOL FOR NEGATIVE ACKNOWLEDGE
SYMBOL FOR SYNCHRONOUS IDLE
SYMBOL FOR FILE SEPARATOR
SYMBOL FOR NEWLINE