msg. = "??"                            /*                            */
msg.0000  = "OK"                       /* exists                     */
msg.0005  = "NC"                       /* not catalogued             */
msg.0009  = "MI"                       /* migrated                   */
      ldrc   = Listdsi("'"dsn"'" directory norecall) /* sets:        */
                                       /*   SYSDSNAME                */
                                       /*   SYSVOLUME                */
                                       /*   SYSUNIT                  */
                                       /*   SYSDSORG                 */
                                       /*   SYSRECFM                 */
                                       /*   SYSLRECL                 */
                                       /*   SYSBLKSIZE               */
                                       /*   SYSKEYLEN                */
                                       /*   SYSALLOC                 */
                                       /*   SYSUSED                  */
                                       /*   SYSPRIMARY               */
                                       /*   SYSSECONDS               */
                                       /*   SYSUNITS                 */
                                       /*   SYSEXTENTS               */
                                       /*   SYSCREATE                */
                                       /*   SYSREFDATE               */
                                       /*   SYSEXDATE                */
                                       /*   SYSPASSWORD              */
                                       /*   SYSRACFA                 */
                                       /*   SYSUPDATED               */
                                       /*   SYSTRKSCYL               */
                                       /*   SYSBLKSTRK               */
                                       /*   SYSADIRBLK               */
                                       /*   SYSUDIRBLK               */
                                       /*   SYSMEMBERS               */
      dsstat = msg.sysreason           /*   SYSREASON                */
                                       /*   SYSMSGLVL1               */
                                       /*   SYSMSGLVL2               */