Carsten, could you clarify some things for me? 1. If sessions and entities are orthogonal, what SHOULD the Consumer do? 2. SHOULD it create a transient entity _and_ a session? 3. MUST it do so? 4. Who gets to decide whether there are multiple entities per session or multiple sessions per entities? 5. When SHOULD a Consumer create a session and when a transient entity? 6. What _is_ a session, logically? What _is_ a transient entity? Gil