Chapter 18.200 D DOWNTOWN DISTRICTS This chapter is included in your selections. Sections: 18.200.010 Purpose and regulations. 18.200.020 Downtown district classifications. 18.200.030 Principal, special and conditional uses. 18.200.060 Dimensional and performance standards. 18.200.070 Parking. 18.200.080 Legal nonconforming uses. 18.200.090 Design standards.