We show multiple wiki pages in a single web page. This Lineup of pages lets us do drag-and-drop refactoring of deeply-nested content.
The first page comes from a site we call the origin.
We can browse within the origin site or off to remote ones.
When logged in, edits go to the origin.
When not logged in, the browser saves edits for the origin.
We can edit remote sites but our changes go to the origin.
We can drag a page to the lineup from another tab