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

 gs_name

    Name of the memory-resident global section associated with the
    entry being removed. You must specify a name.

    If page tables are reserved for the named memory-resident global
    section, the additional reserved memory is also removed.