因此，要浏览这篇文章重的练习，创建两个用户并将其中一个安排为那些角色的每一个。
Therefore, to work through the exercises in this article, create two users and assign one of them to each of those roles.
如果你们可将其与任何文章一起刊印以进一步提高对这一重要日子的认识，将会非常有益。
It would be very useful if you could print it with any article to further increase awareness of this important day.
我为IBM所写的专栏、教程和文章都有我自己的两重——也可能是三重——目的。
My IBM columns, tutorials, and articles have had a dual — or maybe triple — purpose for your humble author.
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