Eventually, one design, pattern could be a startingpoint for an entire pattern-driven design process.
最终，在一个设计中，模式可以成为一个整个基于模式的设计过程的开始点。
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What you'll find is a variation in design and usage of the available kernel APIs, but each is useful for instruction or as a startingpoint for a new device driver.
As usual when crypto is involved, the startingpoint for understanding the system's design is to think about the secret keys: how many there are, who knows them, and how they are used.