I think the lack of proper classification in the wiki may be one of the reasons why these values are used so little. If the number of usage reaches a certain number, I think the renderer will also notice it. ITF's classification of tennis courts is Acrylic, Artificial clay, Artificial grass, Asphalt, Carpet, Clay, Concrete, Grass and Other. There may be no further classification under acrylic, only different brands. There is also a classification of the bounce speed of the ball. Acrylic surface is not only used in tennis courts, but also in basketball courts, volleyball courts, etc.
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