CALL "WIN$PRINTER" USING WINPRINT-CLEAR-DATA-COLUMNS                     GIVING returnCode  | 
WINPRINT-CLEAR-DATA-COLUMNS  | Constant  | 
1   | Operation successful.  | 
WPRTERR-UNSUPPORTED  | The WIN$PRINTER library routine is not supported.  | 
WPRTERR-BAD-ARG  | The WIN$PRINTER library routine has been called with bad parameters.  |