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Warp vs. Sori

According SEMI’s Shape Decision Tree there is a very small difference only,
depending on TTV. With low TTV values the difference is really negligible:

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The original Japanese SORI definition (and also German DIN) has a serious
difference:

The wafer is resting on a flat plane, not gravity corrected!

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Further terms related to the measurement of wafers, such as measurable properties, measurement methods, measurement results, and forms of representation:
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