"book-pflow-xyz/chapters/appendix-d-glossary.md" . . "Capitalised: a model for making models — the cross-cutting claim of this book. A small, fixed alphabet — place, transition, arc, guard — whose local composition rules generate an unbounded space of specific, checkable systems, because a model written in it is a value rather than a program. Lowercase `metamodel`, in code font, is a Go package implementing one instance of the vocabulary (Chapter 21; *A Tiling for Computation*)."@en . . "Metamodel"@en . "21"^^ .