A term coined by Espen Aarseth describing a set of 7 variables that describe any text according to their mode of traversal. The variables and their possible values are:

Dynamics: Static, IDT, TDT
Determinability: Determinable, Indeterminable
Transciency: Transient, Intransient
Perspective: Personal, Impersonal
Access: Random, Controlled
Linking: Explicit, Conditional, None
User Function: Explorative, Configurative, Interprative, Textonic

Together, the 7 variables create 576 unique media positions.