I am using VS 2012 to work on a long term project. Used to be, when I saved then opened it at a later date, the editor would keep track of which classes and headers were open at the time (Tabs under ribbon bar).
Something changed. Now when I reopen the editor, the class open tabs are not shown. I don't remember changing things, but anything is possible. Is there a flag somewhere that covers how much is remembered? Where does one go to cause the editor to remember the open classes last displayed.