Section 8-101 - Definitions(a) In this title the following words have the meanings indicated.(b) "Appurtenance and environmental setting" includes: (1) paved or unpaved walkways and driveways;(c) "Commission" includes a historic district commission or a historic preservation commission.(d) "Demolition" includes any willful neglect in the maintenance and repair of a structure, other than the appurtenance and environmental setting of the structure, that: (1) is not due to a financial inability to maintain and repair the structure; and(2) threatens to result in a substantial deterioration of the exterior features of the structure.(e) "District" means a significant concentration, linkage, or continuity of sites, structures, or objects united historically or aesthetically by plan or development.(f) "Person" includes a unit of local government.(g) "Routine maintenance" means work that:(1) does not alter the exterior fabric or features of a site or structure; and(2) has no material effect on the historical, archaeological, or architectural significance of the site or structure.(h) "Site" means the location of:(1) an event of historic significance; or(2) a structure or ruin that possesses historic, archaeological, or cultural significance.(i)(1) "Structure" means a combination of material to form a construction that is stable.(2) "Structure" includes: (vi) an observation tower;(viii) a water tank or tower;(xix) a display sign that is visible or intended to be visible from a public way; and(xx) a part of a structure.