I've been in the Documents To Documents and sometimes can't figure out how to get back to the main screen where you can select various documents. There seems to be no Back button that gets me there when I go in a certain way. What's the trick to get back? So far I'm pretty impressed with the App, and am debating if I need to go for the iWord and iExcel App, as it appears to me so far that I can edit these docs in Documents to Go. Anyone want to comment as to what features that these additional Apps will give me?