The alphabetic set of directions is the abstraction of the embodiment of the direction that instantiates the performance form of the script. It is the functionality of the instruction that epitomises the written form of the script - but only so to inscribe. The Instruction is the set of directions that is the embodiment of the writing machine or the performable rule in entirety. It is the structure of the rule that achieves the alphabetic form of the set of directions.
The Instruction is the score that is the expression of the writing machine or the written score and may or may not be computerised.
See also Inscription,