Thomas Beale wrote: > A number of problems have surfaced over the last couple of years of > archetype modelling that the tools and sometimes the underlying > formalism do not adequately deal with. Many of these are to do with > being able to control the items within a container attribute, such as > inside SECTIONs, CLUSTERs, and the many other places in the openEHR > reference model where attributes can have multiple members. It has taken > quite some time to understand the problems and come up with an analysis > which deals with them all and tries to propose a solution. I have now > attempted to do this at the page > http://www.openehr.org/wiki/display/spec/Ordering+and+choice+in+archetypes+and+templates > > *I have updated this page to include the notion of nesting of 'select' constraints, and some further thoughts on some of the finer details.
- thomas beale *
