I can't get the "FP" to show in the Shooting Information Display on my D700. It doesn't show on my D800 either. I spent over an hour trying to get it to display but no luck. I think it's an error in the manual. Could they have meant it would display on the flash info screen? But Auto FP sync does work very well. I shot photos with shutter speeds from 1/400 to 1/2000 and got perfectly exposed photos.