|  CALL "C$PROGINMEM" USING progName                     GIVING returnCode | 
| progName  | PIC X(n)  | Specifies the program to check. | 
| -1  | wrong parameters. | 
| 0  | program not loaded. | 
| 1  | program already loaded. | 
| call "c$proginmem" using "computetax" if return-code not = 1    display message "ComputeTax is not in memory" end-if |