The main difficulty I am having with this amazing database is to figure out how to get things current and correct errors as I see them. Some of them are duplications. Some are my own doing. Best method so far discovered is just to remove an entire entry and start fresh, but even that approach seems not transparent. I find that I can right click an entry, go to a whole new window, edit some details there (title, authors, etc.), even generate a DOI, and then "save" before closing. This seems to work fairly well but I could not find any instructions on it.... Perhaps someone will do a tutorial to help users of this self-archiving system.