Enables you to indicate whether or not you wish the average value of analog tags whose value is being plotted on the graph on the Historical Data Viewer page to be displayed in the legend. If set to 1 (default), then the average values for analog tags will be displayed in the legend. If set to 0, then the average values for analog tags will not be displayed in the legend.
Default: HDVAnalogPenAverageVisibility = 1