/sys$common/syshlp/helplib.hlb DUMP, Qualifiers, /HEADER  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Dumps the file header and access control list (ACL). To dump
    only the file header, and not the file contents, also specify
    /BLOCK=(COUNT:0). The /HEADER qualifier is invalid for devices
    mounted using the /FOREIGN qualifier.

    Use the /FORMATTED qualifier to control the format of the
    display.

    You can use the /FILE_HEADER qualifier with the /HEADER
    qualifier to have Files-11 file headers printed in an interpreted
    representation.

    By default, the file header is not displayed.