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 Image_Graph - TODO
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Image_Graph
*** Update private tags to protected wherever necessary
*** Create a simple table element
*** Create bar-chart-type where bar have individual widths (i.e. in the dataset fx)

Image_Graph_Element
*** Look at further optimization (line 384) (sample20.php = 416 calls!)

Image_Graph_Legend
*** Possibility to wrap legend titles

Image_Graph_Plot
*** Create a method for making legend samples user defined

Image_Graph_Plot_BoxWhisker
*** Possibility to handle outliers (see http://pear.veggerby.dk/forum/read.php?board=1&id=265)

Image_Graph_Plot_Line
*** Consider new legend icon

Image_Graph_Plot_Smoothed_Radar
*** Create legend sample for smoothed radar chart

Image_Graph_Axis
*** Create a method to align '0' of primary and secondary y-axis

Image_Graph_Axis_Composite
*** Implement composite axis (i.e. linear from 0-10, log from 10-1000, and category from 1001, 1004, 10000, ...)

Image_Graph_Axis_Marker
*** Implement a label mechanism when using axis markers

Image_Graph_Dataset_Function
*** Implement algorithm for "best-select" of points, i.e $points = "auto"