Code is the effectuating non-natural language or the replaceable rule and represents all media. Code: executable instruction, the encryption of the instruction that effects the supplementary language of the executable instruction.
Code here is taken to be the writing of the score that expresses the non-axiomatic language of the machine instruction and turns thought to action. The notational executable instruction is the codification of the writing of the instruction that effects the replaceable language of the executable instruction.
See also Inscription,