Hi Angela,
E, F and T are just the optional extra things you can purchase when registering the litter, if you look on the guide attached to the form, there is a little table tellling you what E, F and T means! E for enhanced pedigree certificates, F for 5 generation pedigrees and T for 3 generation peds!
Hope this helps!

edited to say posted at the same time as chocymolly!!