Members of the sector structure

• wallptr
• wallnum
• ceilingz
• floorz
• ceilingstat
• floorstat
• ceilingpicnum
• ceilingslope
• ceilingshade
• ceilingpal
• ceilingxpanning
• ceilingypanning
• floorpicnum
• floorslope
• floorshade
• floorpal
• floorxpanning
• floorypanning
• visibility
• alignto
• lotag
• hitag
• extra
• ceilingbunch (r2050+)
• floorbunch (r2050+)