
First & follow symbols:
-----------------------

SCalc
first:   "clear" 
follow:  EOF 

Subtotal
first:   integer float 
follow:  integer float "total" 

Range
first:   integer float 
follow:  "+" "accept" "cancel" 

Amount
first:   float 
follow:  "+" "accept" "cancel" 

IntAmount
first:   integer 
follow:  "+" "accept" "cancel" ".." 

