I have read that some commercial multirotors have programmed routines to get off the ground and through ground effect up high enough to hover or fly.

Is this real or just marketing hype? If this is really a feature, how many pilots find it useful? How different would it be that straight manual control of the throttle? Has anyone seen data regarding the difference in thrust requirements between being on the ground and successfully reaching the height that ground effect no longer affects flight?

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