I was typing in the Gmail text box going along just fine, but then got into a weird condition where, as near as I can figure out what happened, I typed an 'a' which then selected all of the text that I had typed, then the next letter I typed replaced all of the selected text, deleting everything. How could it have gotten into that state where 'a' automatically selects everything? And how can you get it back out of that state? I couldn't find an option with the menu key, and the Back button, saved a draft of the now empty email. Lots to learn.