On this page · 7 sectionsOn this pageType systemErrors & effectsServices & capabilitiesModules & behaviorValues & runtimeDatabaseToolingShip Lexicon Short term definitions. Full behavior lives in executable book tests. Type system hm-inference.md kind.md variant.md open-variant.md tag.md coercion.md open-binder.md row.md row-extension.md row-subtraction.md lacks-constraint.md primary-type.md gadt.md higher-rank-polymorphism.md Errors & effects error-channel.md error-row.md effect-row.md Services & capabilities service.md provide.md Modules & behavior named-adapter.md behavior-dictionary.md shc-contract.md Values & runtime persistent-collection.md uniqueness-and-linearity.md modality.md wire-shape.md schema-type.md Database typed-sql.md ship-db.md Tooling golden-expect-test.md cram-test.md