(1)
For the purposes of Chapter Five of this Act, "promissory 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.