Hi there, (now getting to the nitpicking...) in several cases, the spec says "optional". Some people in the IETF believe it's equivalent to "OPTIONAL", while others disagree. I recommend to uppercase "optional" where it's supposed to express a requirement, and to choose a different where it's not. Best regards, JulianReceived on Tuesday, 13 January 2015 16:31:08 UTC
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