In this subchapter:
(1) "Bond order" means an order authorizing the issuance of revenue bonds under this subchapter.
(2) "Parking facility" means:
(A) a lot, area, or structure used to park motor vehicles;
(B) the site for the lot, area, or structure; and
(C) equipment used in connection with maintenance and operation of the lot, area, or structure.
(3) "Trust indenture" means an instrument, including a mortgage or deed of trust, that secures bonds issued under this subchapter by:
(A) a pledge of revenue; or
(B) a pledge of revenue and a mortgage lien on property.