On 29/06/2010 15:29, Leonardo Moretti wrote:
> In the case of "Comment" in openEHR-EHR-OBSERVATION.blood_pressure.v1, the
> ADL definition is:
>
> ELEMENT[at0033] occurrences matches {0..1} matches { -- Comment
> value matches {
> DV_TEXT matches {*}
> }
> }
>
> This means that here I cannot specify a null_flavour for Comment element!
> why not? The value attribute is optional. - thomas beale
