           from = original code
             to = destination code
 FROM   TO        enter a new code under the columt "to" to recode the label
 CODE CODE        "0" cancels the label
    1    1 = p.  0
    2    2 = p.  1
    3    3 = p.  2
    4    4 = p.  3
    5    5 = p.  4
    6    6 = p.  5
    7    7 = p.  6
    8    8 = p.  7
    9    9 = p.  8
   10   10 = p.  9
   11   11 = p. 10
