I use both Word and Excel a lot (in Mountain Lion), and work with lots of different files, so I am constantly opening and closing files, as well as flicking between programs. The following situation arises if either of these programs are already open but have no files open within them. If I am using another program, when I click the Word or Excel icon in the dock to go back to that program, it will open up a new blank document or spreadsheet. How do get it to stop doing this (as I usually don't want a new document or spreadsheet, but want to reopen an existing file under Open Recent)? Moving between programs using command-tab doesn't cause this to happen, but I find this less convenient than using the mouse.