# Formal Grammar/Semantics

> The requirement that a domain language have a defined grammar and semantics rather than an ad-hoc syntax.

Record: `lexicon:formal-grammar-semantics`
Kind: constraint
Layer: [Declarative Core](https://banes-lab.com/records/layer/declarative-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-formal-grammar-semantics

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Domain Expressiveness](https://banes-lab.com/records/lexicon/domain-expressiveness.md) and before [General-Purpose Boilerplate](https://banes-lab.com/records/lexicon/general-purpose-boilerplate.md).

## Category

- [Metaprogramming / Language-Oriented Architecture](https://banes-lab.com/records/lexicon-category/metaprogramming-language-oriented-architecture.md)

## Required by

- [Domain-Specific Language](https://banes-lab.com/records/architecture/domain-specific-language.md)

## Linked from

- [Metaprogramming / Language-Oriented Architecture](https://banes-lab.com/ontology/principles/architecture-category-metaprogramming-language-oriented-architecture.md)