Section 128

(1) For the purposes of Chapter Five of this Act, "promissory note"
Note includes any document or writing, except a bank note, containing a promise to
pay any sum of money.
(2) A note promising the payment of any sum of money out of any particular
fund which may or may not be available, or upon any condition or contingency
which may or may not be performed or happen, shall be deemed a promissory
note for that sum of money.