feature request #8133open
[DISCUSS] Combine Facts and Extensions
for a first discussion see #7653
Facts (DescriptionsElements) and Extensions are both meant for a generic extension of (identifiable) CDM classes. Facts are more powerful by having i18n, sources, grouping via Descriptions, ordering of features, scopes, etc.
Extensions on the other hand are available for more classes and easier to handle (though not used much yet). Also they are not yet supported well by the dataportal.
We may try to unify the system to make it easier to handle also software sided.
Be aware that a third way to store information related to a class are the class attributes themselves. Also here it could be sometimes interesting to allow adding source information which is currently not possible (sources are only available for the source instances themselves).