process
  local integer arr1 variable initial {1, 2, 3}
  local integer arr2 variable initial {4, 5, 6}
  ; adds the arr2 items to arr1
  repeat over arr2
    set new arr1 to arr2
  again
  ; arr 1 now has all items - output them
  repeat over arr1
    put #main-output '%d(arr1) '
  again