mystery keyboard commands

Hello allI have deleted all my assignments in FS as I use the key combinations for external controls etc, but F10, left cursor, and X on the keyboard have somehow been assigned to tasks I haven't selected.FS Keyboard commands tell me that F10 is for Kneeboard hide/display but actually is set for PAUSE, left cursor is select item 1,this scrolls across the menu bar in FS, and X is switch to standby frequency,and this switches between cockpit view and virtual cockpit. None of these are assigned anywhere I can see and was wondering if anyone had any idea how I can resolve this. They are interfering with other controls I have assigned!I would be very grateful for any advice or suggestions as I have been trying to sort this for a week now and I'm a little frustrated with it.Thank you everyone in advanceAlan W