C$RUN
The library routine runs a program asynchronously. If you want to run a program synchronously, use the 
SYSTEM library routine.
Syntax:
 CALL "C$RUN" USING commandLine              GIVING returnCode  | 
Parameters:
commandLine   | PIC X(n)   | Specifies the operating system command to be executed.  | 
Return code:
returnCode can be any signed numeric data item and provides additional information:
-1   | Operation failed.  | 
0   | Operation succeeded.  | 
Examples:
Example - Run a external program asynchronously
call "c$run" using "notepad.exe"  |