OAS 3.0 and 3.1 explicitly define `"integer"` as an allowed value of the `type` keyword in section [Data Types](https://spec.openapis.org/oas/v3.1.0.html#data-types). This difference between OAS and pure JSON Schema is not mentioned in section [Schema Object](https://spec.openapis.org/oas/v3.1.0.html#schema-object). ### Proposal Explicitly mention this significant difference and define OAS `type: "integer"` as a shortcut for JSON Schema `type: "number", multipleOf: 1`. Explicitly state in the [Format Registry](https://ralfhandl.github.io/OpenAPI-Specification/registry/format/) that column "Type" uses the extended OAS definition.