Subtitle 2District Descriptions § 12-201. OR Office-Residential Districts. § 12-202. TOD Transit-Oriented Development Districts. § 12-203. EC Educational Campus Districts. § 12-204. H Hospital Campus Districts. § 12-205. T Transportation Districts. 12-206. {Reserved} § 12-207. W Waterfront Overlay Districts. § 12-208. R-MU Rowhouse Mixed-Use Overlay Districts. § 12-209. D-MU Detached Dwelling Mixed-Use Overlay Districts. § 12-210. AU Adult Use Overlay Districts. § 12-211. PC Port Covington Zoning District. § 12-212. Harford Road Overlay District.