Library /sys$common/syshlp/scacp$help.hlb SHOW, TRACE, Qualifiers, /SORT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /SORT
       /NOSORT (default)

    Returns trace data sorted across channels, VCs, and the global
    trace buffer by sequence number. The default is trace data
    returned for channels and VCs one at a time, in order, for the
    channel or VC, but not across channels and VCs.