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14 changes: 7 additions & 7 deletions src/oas.md
Original file line number Diff line number Diff line change
Expand Up @@ -1615,7 +1615,7 @@ See [Working With Examples](#working-with-examples) for further guidance regardi
| <a name="media-type-schema"></a>schema | [Schema Object](#schema-object) | The schema defining the content of the request, response, parameter, or header. |
| <a name="media-type-example"></a>example | Any | Example of the media type; see [Working With Examples](#working-with-examples). |
| <a name="media-type-examples"></a>examples | Map[ `string`, [Example Object](#example-object) \| [Reference Object](#reference-object)] | Examples of the media type; see [Working With Examples](#working-with-examples). |
| <a name="media-type-encoding"></a>encoding | Map[`string`, [Encoding Object](#encoding-object)] | A map between a property name and its encoding information. The key, being the property name, MUST exist in the schema as a property. The `encoding` field SHALL only apply to [Request Body Objects](#request-body-object), and only when the media type is `multipart` or `application/x-www-form-urlencoded`. If no Encoding Object is provided for a property, the behavior is determined by the default values documented for the Encoding Object. |
| <a name="media-type-encoding"></a>encoding | Map[`string`, [Encoding Object](#encoding-object)] | A map between a property name and its encoding information. The key, being the property name, MUST exist in the schema as a property. The `encoding` field SHALL only apply when the media type is `multipart` or `application/x-www-form-urlencoded`. If no Encoding Object is provided for a property, the behavior is determined by the default values documented for the Encoding Object. |

This object MAY be extended with [Specification Extensions](#specification-extensions).

Expand Down Expand Up @@ -1759,7 +1759,7 @@ These fields MAY be used either with or without the RFC6570-style serialization
| Field Name | Type | Description |
| ---- | :----: | ---- |
| <a name="encoding-content-type"></a>contentType | `string` | The `Content-Type` for encoding a specific property. The value is a comma-separated list, each element of which is either a specific media type (e.g. `image/png`) or a wildcard media type (e.g. `image/*`). Default value depends on the property type as shown in the table below. |
| <a name="encoding-headers"></a>headers | Map[`string`, [Header Object](#header-object) \| [Reference Object](#reference-object)] | A map allowing additional information to be provided as headers. `Content-Type` is described separately and SHALL be ignored in this section. This field SHALL be ignored if the request body media type is not a `multipart`. |
| <a name="encoding-headers"></a>headers | Map[`string`, [Header Object](#header-object) \| [Reference Object](#reference-object)] | A map allowing additional information to be provided as headers. `Content-Type` is described separately and SHALL be ignored in this section. This field SHALL be ignored if the media type is not a `multipart`. |

This object MAY be extended with [Specification Extensions](#specification-extensions).

Expand All @@ -1782,9 +1782,9 @@ See [Appendix B](#appendix-b-data-type-conversion) for a discussion of data type

| Field Name | Type | Description |
| ---- | :----: | ---- |
| <a name="encoding-style"></a>style | `string` | Describes how a specific property value will be serialized depending on its type. See [Parameter Object](#parameter-object) for details on the [`style`](#parameter-style) field. The behavior follows the same values as `query` parameters, including default values. Note that the initial `?` used in query strings is not used in `application/x-www-form-urlencoded` message bodies, and MUST be removed (if using an RFC6570 implementation) or simply not added (if constructing the string manually). This field SHALL be ignored if the request body media type is not `application/x-www-form-urlencoded` or `multipart/form-data`. If a value is explicitly defined, then the value of [`contentType`](#encoding-content-type) (implicit or explicit) SHALL be ignored. |
| <a name="encoding-explode"></a>explode | `boolean` | When this is true, property values of type `array` or `object` generate separate parameters for each value of the array, or key-value-pair of the map. For other types of properties this field has no effect. When [`style`](#encoding-style) is `"form"`, the default value is `true`. For all other styles, the default value is `false`. Note that despite `false` being the default for `deepObject`, the combination of `false` with `deepObject` is undefined. This field SHALL be ignored if the request body media type is not `application/x-www-form-urlencoded` or `multipart/form-data`. If a value is explicitly defined, then the value of [`contentType`](#encoding-content-type) (implicit or explicit) SHALL be ignored. |
| <a name="encoding-allow-reserved"></a>allowReserved | `boolean` | When this is true, parameter values are serialized using reserved expansion, as defined by [RFC6570](https://datatracker.ietf.org/doc/html/rfc6570#section-3.2.3), which allows [RFC3986's reserved character set](https://datatracker.ietf.org/doc/html/rfc3986#section-2.2), as well as percent-encoded triples, to pass through unchanged, while still percent-encoding all other disallowed characters (including `%` outside of percent-encoded triples). Applications are still responsible for percent-encoding reserved characters that are [not allowed in the query string](https://datatracker.ietf.org/doc/html/rfc3986#section-3.4) (`[`, `]`, `#`), or have a special meaning in `application/x-www-form-urlencoded` (`-`, `&`, `+`); see Appendices [C](#appendix-c-using-rfc6570-based-serialization) and [E](#appendix-e-percent-encoding-and-form-media-types) for details. The default value is `false`. This field SHALL be ignored if the request body media type is not `application/x-www-form-urlencoded` or `multipart/form-data`. If a value is explicitly defined, then the value of [`contentType`](#encoding-content-type) (implicit or explicit) SHALL be ignored. |
| <a name="encoding-style"></a>style | `string` | Describes how a specific property value will be serialized depending on its type. See [Parameter Object](#parameter-object) for details on the [`style`](#parameter-style) field. The behavior follows the same values as `query` parameters, including default values. Note that the initial `?` used in query strings is not used in `application/x-www-form-urlencoded` message bodies, and MUST be removed (if using an RFC6570 implementation) or simply not added (if constructing the string manually). This field SHALL be ignored if the media type is not `application/x-www-form-urlencoded` or `multipart/form-data`. If a value is explicitly defined, then the value of [`contentType`](#encoding-content-type) (implicit or explicit) SHALL be ignored. |
| <a name="encoding-explode"></a>explode | `boolean` | When this is true, property values of type `array` or `object` generate separate parameters for each value of the array, or key-value-pair of the map. For other types of properties this field has no effect. When [`style`](#encoding-style) is `"form"`, the default value is `true`. For all other styles, the default value is `false`. Note that despite `false` being the default for `deepObject`, the combination of `false` with `deepObject` is undefined. This field SHALL be ignored if the media type is not `application/x-www-form-urlencoded` or `multipart/form-data`. If a value is explicitly defined, then the value of [`contentType`](#encoding-content-type) (implicit or explicit) SHALL be ignored. |
| <a name="encoding-allow-reserved"></a>allowReserved | `boolean` | When this is true, parameter values are serialized using reserved expansion, as defined by [RFC6570](https://datatracker.ietf.org/doc/html/rfc6570#section-3.2.3), which allows [RFC3986's reserved character set](https://datatracker.ietf.org/doc/html/rfc3986#section-2.2), as well as percent-encoded triples, to pass through unchanged, while still percent-encoding all other disallowed characters (including `%` outside of percent-encoded triples). Applications are still responsible for percent-encoding reserved characters that are [not allowed in the query string](https://datatracker.ietf.org/doc/html/rfc3986#section-3.4) (`[`, `]`, `#`), or have a special meaning in `application/x-www-form-urlencoded` (`-`, `&`, `+`); see Appendices [C](#appendix-c-using-rfc6570-based-serialization) and [E](#appendix-e-percent-encoding-and-form-media-types) for details. The default value is `false`. This field SHALL be ignored if the media type is not `application/x-www-form-urlencoded` or `multipart/form-data`. If a value is explicitly defined, then the value of [`contentType`](#encoding-content-type) (implicit or explicit) SHALL be ignored. |

See also [Appendix C: Using RFC6570 Implementations](#appendix-c-using-rfc6570-based-serialization) for additional guidance, including on difficulties caused by the interaction between RFC6570's percent-encoding rules and the `multipart/form-data` media type.

Expand All @@ -1793,8 +1793,8 @@ The absence of all three of those fields is the equivalent of using `content`, b

##### Encoding the `x-www-form-urlencoded` Media Type

To submit content using form url encoding via [RFC1866](https://tools.ietf.org/html/rfc1866), use the `application/x-www-form-urlencoded` media type in the [Media Type Object](#media-type-object) under the [Request Body Object](#request-body-object).
This configuration means that the request body MUST be encoded per [RFC1866](https://tools.ietf.org/html/rfc1866) when passed to the server, after any complex objects have been serialized to a string representation.
To work with content using form url encoding via [RFC1866](https://tools.ietf.org/html/rfc1866), use the `application/x-www-form-urlencoded` media type in the [Media Type Object](#media-type-object).
This configuration means that the content MUST be encoded per [RFC1866](https://tools.ietf.org/html/rfc1866) when passed to the server, after any complex objects have been serialized to a string representation.

See [Appendix E](#appendix-e-percent-encoding-and-form-media-types) for a detailed examination of percent-encoding concerns for form media types.

Expand Down