ContourShading
 Usage
• ContourShading is an option for contour plots which specifies whether the regions between contour lines should be shaded.
Notes
• With ContourShading -> False, regions between contour lines are left blank. • With ContourShading -> True, regions are colored based on the setting for the option ColorFunction. The default is to color the regions with gray levels running from black to white with increasing height. • The value given as the argument for the ColorFunction function is the average of the values of the contour lines bounding a particular region. If ColorFunctionScaling -> True, it is scaled so as to lie between 0 and 1. • New in Version 2.
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