The dropboxes are filtered using the field immediately above each.
The other field shows the hidden OPTION VALUE attribute.

  The SQLs used on this page

 // Table 1
 SELECT instinct, name
   FROM dog
ORDER BY instinct
  FORMAT dropdown
 DISPLAY on
     DIV box1

 // Table 2
 SELECT firstname, title
   FROM book
  FORMAT dropdown
 DISPLAY on
   VALUE on
     DIV box4

 // Table 3
 SELECT family, species
   FROM mammals
  FORMAT dropdown
     DIV box3