· PDF file(l) (m) (n) (o) (p) 9604] DO. (i) (ii) (iii) (iv) letter means: Down and out letter...
4
· PDF file(l) (m) (n) (o) (p) 9604] DO. (i) (ii) (iii) (iv) letter means: Down and out letter Dummy official letter Demi-official letter Directly official letter