/TT>, but applies <TT><I>f</I></TT> in
      right to left order.</P>
    </DD>

    <DT>
      <TT>mapPartial <I>f</I> (<I>l1</I>, <I>l2</I>)</TT>
    </DT>
    <DD>
      <P>Maps the function <TT><I>f</I></TT> over the list of pairs of elements
      from the lists <TT><I>l1</I></TT> and <TT><I>l2</I></TT>, returning the
      list of results where <TT><I>f</I></TT> was defined. If the lists are of
      unequal lengths, the excess elements from the tail of the longer one are
      ignored. The above expr