/sys$common/syshlp/helplib.hlb Sys Files, [SYSUPD], SIZE_FILES.COM  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Command procedure used by builders and kitters to estimate kit
    size, installation size, or disk space. This file is normally
    deleted when these procedures complete, so it is unlikely you
    will see it on your system.