<?xml version="1.0"?>
<root>
  <person>
    <person_id size="8" pkey="y" required="y">FB</person_id>
    <pers_type_id size="6" required="y"
                           control="dropdown" 
                           optionlist="pers_type_id">ANON</pers_type_id>
    <first_name size="20" required="y">Fred</first_name>
    <last_name size="30" required="y">Bloggs</last_name>
    ....
  </person>
  <lookup>
    <pers_type_id>
      <option id=" "></option>
      <option id="ACTOR">Actor/Artiste</option>
      <option id="ANON">Anne Oni Mouse</option>
      <option id="BORING">Boring Person</option>
      <option id="CARTOO">Cartoon Character</option>
      ....
    </pers_type_id>
  </lookup
</root>