VMS Help Sys Parameters, TBSKIPWSL  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    TBSKIPWSL specifies the maximum number of working set list
    entries that may be skipped while scanning for a "good" entry
    to discard. Setting this parameter to 0 disables skipping.

    This special parameter is used by Compaq and is subject to
    change. Do not change this parameter unless Compaq recommends
    that you do so.