I finally have created my document in tree view, but:
1) when I add a new child node after, the outline view updates, but the editor still displays the same tree.
2) Also, the editor window does not display the "*" for the document being modified.
3) The editor allows me to add elements before, after, as child, etc, but there is no way of editing / adding text content. I have to save (which i don't see if it worked), edit the document per hand, and then reload.