The Rule sets the aim that is the being of the writing machine or the directing abstraction - it is the 'where' not the 'how'. The Rule is thus the type of the formation that effects a working layout of the destination and may be identified with the writing machine.
The Rule is thus the specification of the schema that renders an effective outline of the end point and constitutes the writing machine. The Rule is the organisation or the directing grammar - the goal not the route. The Rule is thus the being of the schema that renders a functioning identity of the aim. Rule equals the alterable idea, the specification of the grammar that effects an effective identity of the destination and constitutes the writing machine. It is the identity of the idea that is a working form of the destination.
See also Inscription,