The parameters in the Root top section describe drawing a simple root top for plants such as carrots on which you can see a bit of root coming out of the ground. For most plants you can ignore this section.

 Drawing parameters

See the section on A common suite of parameters for drawing 3D objectsA_common_suite_of_parameters_for_drawing_3D_objects. The only thing different about the root top in terms of drawing is that the number of sections is not a parameter; it’s set at five.

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