The five-pixel line divisor will be overwritten later as a white separator between pie slices in the image.
Set percentage of pie slicel of all slice percentages should be 100. Slices are evaluated counter clockwise.
Each pie sliced is, in turn, set to transparent, and the Mosaic background image is then applied to the pie graph.
Affected elements include: markers, columns, bars, circles, and pie slices.
