Library /sys$common/syshlp/sysmanhelp.hlb RESERVED_MEMORY, MODIFY, Qualifiers, /PAGE_TABLES  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /PAGE_TABLES (default)
       /NOPAGE_TABLES

    Reserves additional memory for shared page tables system as
    specified on the command line. (The default is taken from the
    existing Memory Registry.) When the memory-resident global
    section is created, shared page tables are created for the global
    section. If you do not specify /ALLOCATE (or if you specify
    /NOALLOCATE), the additional reserved memory is deducted only
    from the system's fluid page count. If you specify /ALLOCATE,
    additional contiguous, during the next reboot of the system,
    aligned pages are allocated for the shared page table, and the
    additional reserved memory is deducted from the system's fluid
    page count.

    If you do not specify /PAGE_TABLES, or if you specify /NOPAGE_
    TABLES, additional memory is not reserved for shared page tables.
    When the memory-resident global section is created, shared page
    tables are not created for the global section.

    You cannot specify /PAGE_TABLES if the reservation has the
    attribute /NOGLOBAL_SECTION.