Tab for ones own InputFields: I have a minor problem with the tab command. I tried to use it for my own InputField, but it doesn't work:

InputField (11,40) "Amount" (11,48) size=16  name="my_amount"
Tab F[Reference] V[my_amount]

I also tried (equally unsuccessfully):

Tab F[Reference] F[my_amount]

For your own InputFields please use the field label:

Tab F[Reference] F[Amount]

You may also use the coordinates:

Tab F[Reference]  #[11,48]