OAI#1675 - Small tweaks to Server Variable language.

Author: tedepstein

versions/3.0.3.md

@@ -437,8 +437,8 @@ To form an addressable server URL, the API consumer MUST substitute a valid valu
 
 Field Name | Type | Description
 ---|:---:|---
-<a name="serverVariableEnum"></a>enum | [`string`] | An enumeration of valid string values for this variable. The array SHOULD NOT be empty. If `enum` is specified, the API consumer MUST assign one of enumerated values to the server variable.
-<a name="serverVariableDefault"></a>default | `string` |  **REQUIRED**. The default value for the server variable.  If [`enum`](#serverVariableEnum) is defined, the `default` value SHOULD exist in the enum's values.  If the API consumer does not have an alternative value, it MUST substitute the `default` value.  Note that this behavior is different from the [Schema Object's](#schemaObject) treatment of default values. Schema defaults can be resolved by the server, and MAY be omitted from the request; but Server Variables MUST be resolved to an assigned or default value by the client, to assemble a final URL for the API request.
+<a name="serverVariableEnum"></a>enum | [`string`] | Optionally specifies an enumeration of valid string values for this variable. The array SHOULD NOT be empty. If `enum` is specified, the API consumer MUST assign one of enumerated values to the server variable.
+<a name="serverVariableDefault"></a>default | `string` |  **REQUIRED**. The default value for the server variable.  If [`enum`](#serverVariableEnum) is defined, the `default` value SHOULD exist in the enum's values.  If the API consumer does not have an assigned alternative value, it MUST substitute the `default` value.  Note that this behavior is different from the [Schema Object's](#schemaObject) treatment of default values. Schema defaults can be resolved by the server, and MAY be omitted from the request; but Server Variables MUST be resolved to an assigned or default value by the client, to assemble a final URL for the API request.
 <a name="serverVariableDescription"></a>description | `string` | An optional description for the server variable. [CommonMark syntax](https://spec.commonmark.org/) MAY be used for rich text representation.
 
 This object MAY be extended with [Specification Extensions](#specificationExtensions).