Library /sys$common/syshlp/dbg$help.hlb DEBUG, SET, SOURCE, Qualifiers, /ORIGINAL  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    (Applies to STDL programs only. Requires installation of the
    Correlation Facility (a separate layered product) and invocation
    of the kept debugger.) Specifies that the debugger display the
    original STDL source file, rather than the intermediate files
    produced during STDL compilation.