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

       /PAGE_FILE=quota

    Specifies the maximum number of pages that can be allocated in
    the paging file for the process. The paging file quota is the
    amount of secondary storage available during execution of the
    image.

    The default quota is the quota established at system generation
    time. The minimum value required for a process to execute is 256
    pages. The paging file quota is pooled.