I should be able to *easily* pass parameters to linked pages

(User Story, Investigate , Priority: Medium, Test Status: No automated tests yet , Reported By Justin du Coeur, )
Data Model
Summary: The high concept is that, if My Page expects to receive a parameter, I should be able to simply specify the link as My Page, and pass that parameter semi-magically.
The machinery to be able to do this is mostly in place. It implies that the page declares a new Property of the parameters it expects to receive, including their Types. The "sending" side sees that parameters are specified, looks them up on the receiving Thing, and builds _withParam() accordingly. (It could even Type-check at that point.) The receiving page finds the parameters, translates them using _asType(), and binds them in QL as the pre-cast Type.