Library /sys$common/syshlp/acledt.hlb KPMINUS_KEY  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    DEL W (-)

    Deletes the text from the current cursor position to the
    beginning of the next word and stores it in the delete-word
    buffer.

    UND W (GOLD-minus)

    Inserts the contents of the delete-word buffer directly in front
    of the cursor.