I have a lot of big XLS files in my project. In IntelliJ 8, these could not be opened, but in IntelliJ 9, these are opened by the native editor when selecting them. I really don't want to open those files, sometimes I just want to move them or add/remove them from SVN, but since they are opened automatically when they are selected, this is not possible. How do I turn this behavior off? I tried the help, but couldn't find anything about it.