/*
  user procedure interface
  name: MB_rmsg
*/

typedef long  T_BOO;
typedef long  T_ANA;
typedef float T_REAL;
typedef long  T_TMR;
typedef char  *T_MSG;

typedef struct {
   /* CALL   */ T_ANA  _mbx_id;
   /* CALL   */ T_ANA  _offset;
   /* RETURN */ T_MSG  _value;
} str_arg;

#define MBX_ID           (arg->_mbx_id)
#define OFFSET           (arg->_offset)
#define VALUE            (arg->_value)
