anchor.diff:          override x.ToString() =
               (sprintf "%A" x).ToLowerInvariant()
   
  -/// https://secure.urchin.com/helpwiki/en/Metrics_and_Units_v1.html
  +/// http://support.google.com/urchin/bin/answer.py?hl=en&answer=2646445&topic=2645444&ctx=topic
   [<RequireQualifiedAccess>]
   type Metric =
       ///  Number of hits 
  
positive.code:     /// aggregates by period (for example monthly, daily, hourly totals). 
      | Aggregates
  
  /// https://secure.urchin.com/helpwiki/en/Dimensions_v1.html
  [<RequireQualifiedAccess>]
  type Dimension =
      /// Return status code from server. 
  
negative.code:     Account: Account
  }
  
  /// http://support.google.com/urchin/bin/answer.py?hl=en&topic=2645444&ctx=topic&answer=2646446
  [<RequireQualifiedAccess>]
  type Table =
      /// Marketing Campaign results 
  