 
     ## The modeling parameter controllers. ##
     #
-    # TODO - revise comment after ngnvd3 conversion.
+    # TODO - revise to beter fit ngnvd3. These controller's don't do
+    #   much. 
     #
     # Each controller is required to set the following scope variable:
-    # * dataSeriesConfig - the ModelingChart.configure dataSeriesSpec
+    # * dataSeriesConfig - the ModelingChart.configureD3 dataSeriesSpec
     #     argument
     #
     # Note: The modeling parameter controllers defined below somewhat abuse

        # @returns the modeling parameter heading HTML span element,
        #   e.g. '<span>&Delta;K<sub>trans</sub></span>'
        $scope.parameterHeading = (key) ->
          html = "<span>#{ ModelingChart.PARAMETER_HEADINGS[key] }</span>"
          $sce.trustAsHtml(html)

        # The session modelings which have an overlay.

    # should not be used as an example for building a non-d3 charting
    # component.

    ctlrs.controller 'KTransCtrl', [ '$scope', ($scope) ->
        $scope.paramKey = 'kTrans'
    ]

    ctlrs.controller 'VeCtrl', [ '$scope', ($scope) ->
        $scope.paramKey = 'vE'
    ]

    ctlrs.controller 'TauICtrl', [ '$scope', ($scope) ->
        $scope.paramKey = 'tauI'
    ]


