SS$_NORMAL Normal successful completion. The user output routine has completed the function that the symbiont requested. PSM$_FUNNOTSUP Function not supported. The user output routine does not support or does not recognize the function code supplied by the symbiont. To ensure future compatibility, your output routine should return this status for any unrecognized status codes. PSM$_PENDING Requested function accepted but not completed. Your output routine can return this status only with PSM$K_WRITE and PSM$K_WRITE_NOFORMAT function calls. Further, if your routine returns PSM$_PENDING, your routine must eventually signal completion by way of the PSM$REPORT routine. Refer to the description of the PSM$REPORT routine for more information about asynchronous write operations and the PSM$_PENDING condition value. This routine also returns any error condition values that you have coded your output routine to return.