Regarding the Multi Function Steering Wheel, or MFSW, the file symbol allows you to select which menu you want to access. Selecting radio allows you to scroll/select radio stations or CD tracks depending on which audio source you're listening to. The next menu takes you to the instant mpg/average mpg/distance travelled etc. display. In this menu, hitting the OK button allows you to toggle between the two memories, 1 and 2. The third menu takes you to the set-up menu where you can for example set door locking options, follow me home headlight settings and so on. Note that the third menu is disabled when you're on the move for obvious safety reasons. Each time you press the file symbol, it cycles through the 3 menus.