Currently a model's readable sentences (expressions/verbalizations) are built from text combined with single roles. There is no way to attach a verbalization directly to an object type that describes one of its alternate (candidate) keys.

We would like the ability to add an object-type-level expression that can verbalize an alternate key. To support this, an expression component should be able to consist of not only text, text+role, or a single role, but also a role path (a chain of roles), or text combined with a role path.

Benefit: users could describe and read back alternate identification schemes for an object type in natural language, making composite or indirect keys understandable in the model documentation and reports.