This document outlines these transformations. The final product is a framed model in which every content is of length 1. Because this document primarily describes operations on the graph structure of the model, the vocabulary of arcs and nodes, rather than the corresponding contents and signals, will be used throughout. In this transformation, we add to the graph a notion of frame that is maintained through each complete gene and destroyed between genes. Every arc or node in the unframed model will have one, three or nine corresponding versions in the framed model.
Passive signals have three copies, one for each frame.
All other signals have a single framed copy. Initial, final and passive contents have three framed copies, one for each frame. Internal contents, however, have nine framed copies, one for each combination of start and end frames. Contents with single and none frame types have a single framed copy. Not all of the possible copies of each instance will be valid.