Library /sys$common/syshlp/lse$clihelp.hlb GOTO, FILE, Parameter  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 file-spec
    Specifies the name of the file to be edited. LSE uses the
    directories specified in the SET SOURCE_DIRECTORY command to
    resolve the file specification. If the file cannot be found in
    one of those directories (or the list of directories is empty)
    and you used the /CREATE qualifier, LSE creates the file in your
    default directory.