declare                                 /* XFCB                        */
    xfcb$type          lit '10h',       /* identifier on disk          */
    xf$passmode        lit '12',        /* pass word protection mode   */
    xf$pass            lit '16',        /* XFCB password               */
    passlen            lit '8',         /* password length             */
    xf$create          lit '24',        /* creation/access time stamp  */
    xf$update          lit '28';        /* update time stamp           */

declare                       /* directory label: special case of XFCB */
    dirlabeltype       lit '20h',       /* identifier on disk          */
    dl$password        lit '128',       /* masks on data byte          */
    dl$access          lit '64',
    dl$update          lit '32',
    dl$makexfcb        lit '16',
    dl$exists          lit '1';

declare                                 /* password mode of xfcb       */
    pm$read            lit '80h',
    pm$write           lit '40h',
    pm$delete          lit '20h';