RPG invocation (ILE)

     C*..1....:....2....:....3....:....4....:....5....:....6....:....7..
     C                     CALLP     MQBEGIN(HCONN : BEGOP : CMPCOD :
     C                                       REASON)

The prototype definition for the call is:

     D*..1....:....2....:....3....:....4....:....5....:....6....:....7..
     DMQBEGIN          PR                  EXTPROC('MQBEGIN')
     D* Connection handle
     D HCONN                         10I 0 VALUE
     D* Options that control the action of MQBEGIN
     D BEGOP                         12A
     D* Completion code
     D CMPCOD                        10I 0
     D* Reason code qualifying CMPCOD
     D REASON                        10I 0