No source code

Contains depictions of roughly 250 substitution tilings, typically accompanied by a depiction of a substitution system. Contains implicit claims such as “this substitution system leads to a plane tessellation, a patch of which is as depicted.” Topic specific. No apparent code or description of method of generating illustration. Illustrations not reproducible. Detailed substantiation of claims not present, although for simpler systems can be verified by inspection. Not primarily intended as an illustration repository, but nevertheless contains many.