All, I originally posted this on the Implementers list but did not receive a response so I will post it here as well and see if anyone/everyone thinks as I do that this should be considered a typo and not a change in the model.
======================================= The width attribute is defined as a DV_DURATION type and it is required. However the text says that it should be Void if the Interval_Event is instantaneous. There is also an invariant preventing width from being Void. DV_DURATION must be a valid ISO8601 duration string. I believe that the text explanation should read: "Length of the interval during which the state was true. A string containing a single zero (e.g.'0') if an instantaneous event. Thoughts? =============================================================== Regards, Tim -- Timothy Cook, MSc Health Informatics Research & Development Services http://timothywayne.cook.googlepages.com/home LinkedIn Profile:http://www.linkedin.com/in/timothywaynecook

