Peter,
It's probably in your best interests anyway to upgrade your F3 to the latest firmware version which at this time is v.1.4. You can find it on this page at the Sony dot com website:
http://pro.sony.com/bbsc/ssr/micro-xdcam/resource.downloads.bbsccms-assets-...
Just click on the "XDCAM EX Memory Camcorders and Decks" hyperlink on that page and your firmware updates will be revealed. There's also a warning on there that states: "Note: You must use XDCAM Browser software version 2.0 or higher to work with cards/clips shot with a PMW-F3 running firmware version 1.2 or higher."
You can find Sony XDCAM Browser software here:
http://pro.sony.com/bbsc/ssr/micro-xdcam/resource.downloads.bbsccms-assets-...
Updating your camera's firmware does indeed make previously hidden menu items available.
- Don
Don Greening
A Vancouver Video Production Company
Reeltime Videoworks
http://www.reeltimevideoworks.com