Terminology

To speak the Penrose tongue, you have to know some of the most commonly used terms. Here is a list of them:

Theory

Graphical Primitive Instance (GPI): a collection of graphical primitives are built into the Style module of the system (e.g.: Circle, Arrow), which can be used in Style programs. Each instance of such a primitive is called a GPI.
Fields: Substance objects can have fields. TODO: example
Property: Each GPI has a set of properties associated with them. For instance, Circle has r, x, y and so on.
Style Specification "Sty Spec": A collection of Style shapes, their properties, and some extra information of the Substance object they are mapped to.
Style Dictionary: The output of parsing and analyzing both Substance and Style programs is a dictionary structure, mapping from Substance IDs to "Sty Specs".
Translation
Compile-time: During the compilation process of Substance and/or Style.
Computation
Optimization
Objective
Snap Front-end
Renderer

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