Fred - We are already planning on feature that will allow syncing an element selection widget as a parameter value for a Ti process started by an action button. No ETA for this feature at this point.
An option to close the source book on navigation is not something we have planned, but I see how this could be useful. I would open a new enhancement request for this. See:
https://ibm-data-and-ai.ideas.aha.io/. There is an open enhancement request for an option to close all books (and close all books other than the current book).
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Stuart King
IBM Planning Analytics Offering Manager
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