The documentation should make clear up-front that there are two different mechanisms for storing "work in progress", driven by whether the EHR has the ability to store QuestionnaireResponses with the relevant extensions or not.  Then have a separate sub-section that walks through each.  As things are currently written, that choice isn't clear and the option to persist as a QuestionnaireResponse doesn't jump out - even though that's the most preferred option.

Also, there's redundant information here about app launch.  We should talk about app launch in only one place.  This section should only talk about storing work in progress.