https://www.graphicsmill.com/docs/gm/M_Aurigma_GraphicsMill_Drawing_Graphics_FillPie_7_a2019176.htm
FillPie Method (Brush, Int32, Int32, Int32, Int32, Single, Single) - Graphics Mill
Graphics.FillPie Method (Brush, Int32, Int32, Int32, Int32, Single, Single) (Class Library Reference)
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