enum ViewFamily { Invalid = 101, ThreeDimensional = 102, Walkthrough = 103, ImageView = 104, Schedule = 105, CostReport = 106, Sheet = 107, Drafting = 108, FloorPlan = 109, AreaPlan = 110, CeilingPlan = 111, Section = 112, Detail = 113, Elevation = 114, LoadsReport = 115, PressureLossReport = 116, Legend = 117, PanelSchedule = 118, GraphicalColumnSchedule = 119, StructuralPlan = 120, AnalysisReport = 121 };