Editing Control character (section)

==History==
{{Expand section|date=January 2009}}
[[Prosigns for Morse code|Procedural signs]] in [[Morse code]] are a form of control character.

A form of control characters were introduced in the 1870 [[Baudot code]]: NUL and DEL.
The 1901 [[Murray code]] added the [[carriage return]] (CR) and [[line feed]] (LF), and other versions of the Baudot code included other control characters.

The [[bell character]] (BEL), which rang a bell to alert operators, was also an early [[teletype]] control character.

Some control characters have also been called "format effectors".