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

    PQL_DASTLM sets the default limit on the number of pending ASTs
    for a process created by the Create Process ($CREPRC) system
    service or the DCL command RUN (Process).

    PQL_DASTLM has the DYNAMIC and GEN attributes.