| Format/length: | I4 | 
The system function
                       RET(program-name) may be used to
                       receive the return code from a non-Natural program called via a
                       CALL statement.
               
RET(program-name) can be used in
                       an IF statement and within the arithmetic statements
                       ADD,
                       COMPUTE,
                       DIVIDE,
                       MULTIPLY and
                       SUBTRACT.
               
Example:
DEFINE DATA LOCAL 
1 #RETURN (I4) 
... 
END-DEFINE 
... 
... 
CALL 'PROG1' 
IF RET('PROG1') > #RETURN 
   WRITE 'ERROR OCCURRED IN PROGRAM 1' 
END-IF 
...