(1) Adjusted taxable gifts defined
For purposes of this section, the term "adjusted taxable gifts"
means the total amount of the taxable gifts (within the meaning
of section 2503 as modified by section 2511) made by the decedent
after December 31, 1976, other than gifts which are includible in
the gross estate of the decedent.
(2) Adjustment for certain gift tax
For purposes of this section, the rules of section 2001(d)
shall apply.