Library /sys$common/syshlp/pca$help.hlb SHOW, ALL, Qualifiers, /FULL  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Gives more complete status information than the unqualified
    SHOW ALL command. If you specify the /FULL qualifier, you
    see the status of all data collection options, even those not
    established, and all mode settings. You also see full data file
    information. If you omit the /FULL qualifier, you see only the
    data collection options that are established and only a subset of
    the remaining status information.