When will the security's setup doc come?

Hi, Mingjie:

    3 questions:

    1. I setup the securtiry Coprocessor on my hbase cluster, and the
"grant", "revoke", "user_permission" cmds can work. But I don't know
whether I setup it correctly, Is there any docs for me to check?

    2. I didn't know the Permision.Action : EXEC('X') mean, which scene I
would use this Permission?

    3. After one account create table, the account doesn't have the read
and write priviage, can we add it default?
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Best wishes!
My Friend~