The document discusses legal frameworks around public nuisances and vacant properties in California and San Diego. It outlines sections of the California Penal Code, Civil Code, and San Diego Municipal Code related to public nuisances. It then examines different types of vacant lots or "voids" in San Diego, including remnant parcels, easements, brownfields, and redevelopment areas. It proposes solutions like regulating the voids, expanding vacant property programs, and allowing transitional uses until formal development.