VMS Help SCA, SCA Topics, Glossary, compilation_line_number  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    A line number generated by the compiler which starts at 1 for
    the first file used during the compile and goes up by one for
    each line read. If there is an include file, the compilation line
    number is increased by one for each line in the include file. By
    default, the line numbers in the query display produced by the
    FIND or INSPECT commands are compilation line numbers.