I should be able to highlight a QL Expression, and edit it with Explorer

(User Story, Investigate , Priority: Medium, Test Status: No automated tests yet , Reported By Justin du Coeur, )
User Interface
Summary: Next step with Querki Explorer: from a Large Text or Function, it should be possible for me to select a QL expression easily, highlight that, press a button to take me into QL Explorer pre-loaded with that expression (ideally, with the context pre-populated correctly), experiment with that expression, Save from Explorer and have the expression populate back in-place in the Property.