Why Q3 is built the way it is: the design behind the code, and the rules it follows.

Page	What it explains
Architecture	the layers of the code, and which may depend on which
Ontology	the data model: the entities in each layer and how they relate
Differentiability	how forces, stress and the JAX gradient API are derived from the energy
Provenance	how Q3 implements what other codes do and stays permissively licensed