Folded Citation into Assertion - summary now refers to the reference line, description would be info on the source. Deleted Element, and moved functionality into Assertion. Deleted Axiom, Endpoint; now, to make an axiom or endpoint, just call Assertion(int _id, AssertionType _type) with the desired parameters.
Done for today. Got the display working for all the text fields; got selection on the left bar online; the list model now updates (adding elements to the Outline goes through it; perhaps I should just call it an Outline model?). Also, depending on the selection, it hides and shows UI elements. Working now on the Argument displays (supporting, opposing, exclusive).