. "In communications and information processing, code is a system of rules to convert information\u2014such as a letter, word, sound, image, or gesture\u2014into another form or representation, sometimes shortened or secret, for communication through a channel or storage in a medium. An early example is the invention of language, which enabled a person, through speech, to communicate what he or she saw, heard, felt, or thought to others."@en . . . . .