In this subchapter:
(1) "Bond order" means the order authorizing the issuance of revenue bonds.
(2) "Parking station" means a lot, an area, or a surface or a subsurface structure for automotive vehicle parking. The term includes the equipment used in connection with the maintenance and operation of the station and the site of the station.
(3) "Trust indenture" means the indenture pledging revenues to secure revenue bonds issued by a hospital district.