The same issues exist on the WritableStream side. A WritableStream has a highWaterMark and desiredSize. There is a writer.ready promise that producers of data are supposed to pay attention but often don't.
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，这一点在Line官方版本下载中也有详细论述
复杂物理效果，模拟画面仍欠真实
Bits [17:14]: Four control flags -- set the descriptor's Accessed bit, mark validation passed, request a limit check, or signal a stack operation.