RE: [ubl] Discussion of substitution groups

["CRAWFORD, Mark" <MCRAWFORD@lmi.org>]

> This all the more persuades me that for
> minor versioning and codelists we have
> only one sensible option - substitution
> groups (without use of abstracts).

But if our schema follow our NDRs and are created from models as
expressed in the spreadsheets, why do we need to use substitution groups
at all?