mandatory vs optional...

Yakov Rekhter <yakov@cisco.com> Tue, 10 September 1996 18:01 UTC

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Subject: mandatory vs optional...
Date: Tue, 10 Sep 96 10:18:53 PDT
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From: Yakov Rekhter <yakov@cisco.com>
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Folks,

How about if we'll specify with each attribute whether this attribute is 
(a) mandatory in all cases, (b) mandatory in some case, but 
optional (or disallowed) in other cases, or (c) optional in all cases.

Yakov.