anchor.diff:  
           /// You can nest InstallExecuteSequence actions in here
           ActionSequences : WiXCustomActionExecution seq
  +
  +        /// You can add custom replacements for the wix xml here.
  +        CustomReplacements: (string * string) seq
       }
   
   /// Default values for WiX Script properties
  
positive.code:         Features = []
          CustomActions = []
          ActionSequences = []
      }
  
  /// Generates WiX Template with specified file name (you can prepend location too)
  
negative.code:     member w.createAttributeList () =
          seq {           
              yield ("Id", w.Id)           
              if w.Group.IsSome then yield ("Group", w.Group.Value.ToString())
          }
      override w.ToString() =
          sprintf "<ServiceDependency%s />"
  