**  This SAS code looks at different ways of defining residents of Manitoba    ;
**  either by:  postal code, postal code and municipal code, or municipal code  ;
**  Postal Code Only  ;
            if (substr(postal,1,1)='R'); R=Manitoba postal code letter;
**  Postal Code, Municipal Code  ;
if (substr(postal,1,1)='R'); 
if muncode = '900' then muncode=put(postal,$postmun.) ; 
if muncode = '900' then delete ;
**  Municipal Code  ;
if muncode ^='900' ;