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

    PQL_DFILLM sets the default open file limit for a process created
    by the Create Process ($CREPRC) system service or the DCL command
    RUN (Process).

    PQL_DFILLM has the DYNAMIC and GEN attributes.