Clarify this section:

change 2. in figure from :**

2. POST Task [t1] with focus [cr1]

to:

2.POST Task [t1] with basedOn [cr1]

change 3b.. in figure from :

3b. Return [cr1] (instructing on what data to retrieve)

to:
3b. Return [cr1] (review the formal 'order')

change text in Step 2:

**from: "...The CommunicationRequest is the 'focus' of the Task

to: "The Task is the 'basedOn' the the CommunicationRequest"

change text in Step 3:

from*: "Step 3: The data source reads the CommunicationRequest (that was referenced by the Task) from the data consumer to determine what data is needed."*

to: "Step 3: The data source reads the CommunicationRequest (that was referenced by the Task.basedOn) from the data consumer to inspect the authorization"

Add a step in diagram and text to indicate that the Data Source inspect Task.input for that data that is needed by the Data Consumer. (here and in http://build.fhir.org/ig/HL7/davinci-ehrx/exchanging-request.html#requesting-exchange-using-task as well)