/NONMEMORY_PFN [=option]

    The /NONMEMORY_PFN qualifier causes SDA to display only page
    table entries that are not in the system's private memory or in
    Galaxy-shared memory.

    /NONMEMORY_PFN has two optional keywords, READONLY and WRITABLE.
    If neither keyword is specified, all relevant pages are
    displayed.

    If READONLY is specified, only pages marked for no write
    access are displayed. If WRITABLE is specified, only pages
    that allow write access are displayed. For example, SHOW PAGE_
    TABLE/ALL/NONMEMORY_PFN=WRITABLE would display all system pages
    whose protection allows write, but which map to PFNs that do not
    belong to this system.