> This is not quite correct as we are talking about constraint. The default is
> what is in the RM. The three states are:
> 1. As in the RM - no statement
> 2. Required (optional in RM)
> 3. Prohibited (optional in RM)
>
> Is that sensible - Sam

Yes - that's fine. I was thinking you wanted to represent a
2-state system - but it really is a 3-state system as you
noted.

Andrew

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