//Unique command is used to remain record which is appointed by key; 

unique [keys];

//unique command is generaly used after sort command; 
//Read data 
get bankR.csv@;

//Execute mult sort to descending order of salnow by jobcat; sort jobcat -salnow;

//Execute unique jobcat to get max salnow by each jobcat; unique jobcat;

//Check max salnow by statis command; get bankR.csv@; statis salnow by jobcat;