START OF HEADING START OF TEXT END OF TEXT END OF TRANSMISSION ENQUIRY ACKNOWLEDGE BELL BACKSPACE CHARACTER TABULATION (horizontal tabulation) LINE FEED LINE TABULATION (vertical tabulation) FORM FEED CARRIAGE RETURN SHIFT OUT (locking-shift one) SHIFT IN (locking-shift zero) DATA LINK ESCAPE DEVICE CONTROL ONE DEVICE CONTROL TWO DEVICE CONTROL THREE DEVICE CONTROL FOUR NEGATIVE ACKNOWLEDGE SYNCHRONOUS IDLE END OF TRANSMISSION BLOCK CANCEL END OF MEDIUM SUBSTITUTE ESCAPE INFORMATION SEPARATOR FOUR (file separator) INFORMATION SEPARATOR THREE (group separator) INFORMATION SEPARATOR TWO (record separator) INFORMATION SEPARATOR ONE (unit separator) DELETE 