anchor.diff:  
   + Parameters
       + q (optional, object) ... Search query.
  -    + type (optional, string) ... Specifies the content type for the news items
  -      to be retrieved. Valid content types are: text, image, video and audio.
  -      Default value: All available media types will be retrieved.
       + start_date (optional, date) ... The start of the date range for the news
         items to be retrieved. If no start date is specified, the news items
         returned will be limited to the last 24 hours.
       + end_date (optional, date) ... The end of the date range for the news items
         to be retrieved. If no end date is specified, the assumed end date will be
         the current time.
  -    + fields (optional, list) ... The list of fields associated with content to
  +    + include_fields (optional, list) ... The list of fields associated with content to
         be retrieved. Default value: All available fields will be retrieved.
  -    + limit (optional, number, `25`) ... The max. number of items to be retrieved.
  -      There is a hard limit of 200 items for this parameter.
  -
  -+ Response 200 (application/json)
  -
  -        {
  +    + exclude_fields (optional, list) ... The list of fields associated with content which
  +      should not be retrieved. Can not be used together with include_fields.
  +
  ++ Response 200 (application/json)
  +
  +        {
  +            "_meta": {
  +                "page": 4, "total": 4, "max_results": 25
  +            },
  +            "_links": {
  +                "self": {"title": "items", "href": "items?start_date=2014-01-01"},
  +                "parent": {"title": "home", "href": "/"}
  +            },
               "_items": [
                   {
  -                    "uri": "tag:superdesk.org,0000:newsml_LM1EA5F0UUD01",
  +                    "_links": {
  +                        "parent": {"href": "/", "title": "home"},
  +                        "collection": {"href": "items", "title": "items"},
  +                        "self": {"href": "items/tag:example.com,0000:newsml_BRE9A605", "title": "Item"}
  +                    },
  +                    "uri": "http://site.com/items/tag:example.com,0000:newsml_BRE9A605",
                       "type": "text",
  +                    "version": 1,
  +                    "versioncreated": "2014-12-11T14:01:27+0000"
                       "headline": "Why failure isn't a dirty word",
                       "body_html": "<p>When JK Rowling delivered the 2008 Harvard commencement speech about failure, her audience consisted of hundreds of students, their families and the university’s faculty. But the impact of her words that day have since reached far wider.</p>",
                       "description_text": "text item"
                   }, {
  -                    "uri": "tag:superdesk.org,0000:newsml_LM1EA5F0UUD13",
  +                    "_links": {
  +                        "parent": {"href": "/", "title": "home"},
  +                        "collection": {"href": "items", "title": "items"},
  +                        "self": {"href": "items/tag:example.com,0000:newsml_BRE9A606", "title": "Item"}
  +                    },
  +                    "uri": "http://site.com/items/tag:example.com,0000:newsml_BRE9A606",
                       "type": "picture",
  +                    "version": 1,
  +                    "versioncreated": "2014-12-11T14:01:27+0000"
                       "mimetype": "image/jpeg",
                       "description_text": "picture item - also applicable to audio/video",
                       "renditions": {
  
positive.code:                         }
                      }
                  }, {
                      "uri": "tag:superdesk.org,0000:newsml_LM1EA5F0UUD07",
                      "type": "text",
                      "headline": "The fat-burning and energy-producing gyms",
                      "body_html": "<p>Professor Mawby feels that experiments like that at Cadbury House have a primary benefit is that they are making people aware. Through active engagement members are forced to acknowledge the physical value of energy and the cost of expanse of its wastage. </p>",
                      "description_text": "text item"
                  }, {
                      "uri": "tag:superdesk.org,0000:newsml_LM1EA5F0UUD11",
                      "type": "text",
                      "headline": "The best pranks in children's books",
                      "body_html": "<p><strong>Mac:</strong> OK, fifth! Thanks, Henry. It’s exciting to be sharing these recommendations in The Guardian, with our UK readers. When I lived in London, I read The Guardian every day. Also, like some rappers, I demand to be paid only in British pounds. </p>",
                      "description_text": "text item"
  
negative.code:             "_links": {
                  "child": [
                      {
                          "href": "publish",
                          "title": "publish"
                      },
                      {
                          "href": "assets",
                          "title": "assets"
                      },
                      {
                          "href": "items",
                          "title": "items"
                      },
                      {
                          "href": "prepopulate",
                          "title": "prepopulate"
                      },
                      {
                          "href": "packages",
                          "title": "packages"
                      }
                  ]
              }
  