0 400 400   INTERFACE Test;
 1 400 400   
 0 400 400   TYPE
 0 400 400     (* Opaque types *)
 0 400 400     HANDLE                  = ADDRESS;
 0 400 400     HMOD(* Module handle *) = HANDLE;
 1 400 400   
 0 400 3ff   END Test.
 1 3ff 3ff