Don't allow placement if you're placing no a nodraw surface, unless it's an entity? Entities like func_brush are cheap, but could be used for any nodraw surfaces that don't seal the map, don't block vis, and yet would need to allow commander placed buildings to be placed there. That should prevent you from just planting a barracks in the wrong parts of the map.
No not people, the camera, you press the button and you can drag to move the camera, or move the terrain in front of the camera, whichever way you want to look at it.
i knew exactly what you meant, i was joking my apologies of i made your serious post confusing or in shame why does everuone else inhere can joke but if i do it i offend people or noone gets it
slightly garbled english doesn't convert humor well, and in text form it's even harder. blizzerd anyway