Creates an object from the class specified and adds it to the objects element list.
Class Details
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Area Chart plot.
An area chart plots all data points similar to a {@see Image_Graph_Plot_Line}, but the area beneath the line is filled and the whole area 'the-line', 'the right edge', 'the x-axis' and 'the left edge' is bounded. Smoothed charts are only supported with non-stacked types