Summary of changes:

• Renamed commaDelimited to simple, reference the type in the RFC and made not applicable to query. Described behavior for primitive value, added exploded example.
• Set default style based on parameter type.
• Explained allowEmptyValue is inapplicable if example table value is n/a.
• Added example of free-form query parameters, made explicit typed example.
• Added support for style to header and cookie params - only one style allowed for each.
• Fixed anchors in Encoding Object.
• Changed the default style of x-www-form-urlencoded to form, set behavior to be like query parameters.
• Made contentType not required, described default values.

Note that the behavior of headeer and cookie parameters is different than what we discussed.

header

For values [ red, green, blue ]:

/test:
  get:
    parameters:
    - in: header
      name: colors
      required: true
      type: array
      style: simple
      items:
        type: string

will be colors: red,green,blue regardless of whether explode is true/false.
This is different than the discussed result of explode true represented as:
colors: colors=red&colors=green&colors=blue.

cookie

By following style being form, we get the representation of Set-Cookie: colors=red,green,blue by default, so no extra explanation needed (unlike using simple).

Open issues:

• What would explode being true for cookie parameter will look like?
• Many users requested that the collectionFormat by default be multi and not csv. This means that we should set explode to true for query parameters by default. It's a cumbersome explanation (if this then that, otherwise something else), but doable. Opinions welcome.