Paul Long wrote:
> 
> >From the syntax in X.680, it looks like these are illegal constructs:
> 
> CHOICE { }
> CHOICE { ... }
> CHOICE { ..., x X }
> 
> IOW, there must be at least one alternative in the extension root. Is that
> true?
> 
> Paul Long
> ipDialog, Inc.

ChoiceType always starts with RootAlternativeTypeList, which is never
empty, so all three constructs above are invalid.
You will probably not get in jail for it, so 'illegal' may not be the
correct term here :-)

Best regards
Egon Andersen

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