In the pre standards phase of this work, it was suggested that some form of "Group Id" or "Linking Tag" be included at the top level of the Symptom to indicate that this Symptom was in someway related to other Symptoms and that this relationship was identifiable by the creator of the Symptom.
Notes
• Jeff: Could capture in the signature, but emitter is uniquely positioned to provide.
• Alvin: On/Off (state). Alarmid.
• Vivian: Prototypes show this is important for performance.