Enablequery vs iqueryable where clause

Where does WebAPI 2.2 OData v4 [EnableQuery] apply?

Where is it correct / incorrect to apply the EnableQueryAttribute as of Jan 2015?

The document linked below:

http://www.asp.net/web-api/overview/odata-support-in-aspnet-web-api/odata-v4/create-an-odata-v4-endpoint

Says:

The [EnableQuery] attribute enables clients to modify the query, by using query options such as $ filter, $ sort, and $ page. For more information, see Supporting OData Query Options.

The following linked document:

http://www.asp.net/web-api/overview/odata-support-in-aspnet-web-api/supporting-odata-query-options

Says:

The EnableQuerySupport method enables query options globally for any controller action that returns an IQueryable type.

But this document for OData 4 on WebApi 2.2 has put it on actions returning IHttpActionResult:

http://blogs.msdn.com/b/webdev/archive/2014/03/13/getting-started-with-asp-net-web-api-2-2-for-odata-v4-0.aspx

I'm going crazy trying to find up-to-date, accurate and consistent documentation on OData v4 / WebApi 2.2.

Which is correct today?