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

    (Applies to Ada programs.) Identifies any Ada package that a
    specified block, subprogram, or package names in a use clause.
    If the symbol specified is a package, also identifies any block,
    subprogram, package, and so on, that names the specified symbol
    in a use clause.