I am trying to make a world for buildings on my college campus. I have completed a KML file and created a world. I have tested the world as well, but I noticed one issue and I was wondering if there is a way for me to fix it. Since many of the buildings are within a small area, is there a way for me to specify how close the user should be before seeing a marker. I tried editing how many could be on the screen at one time by limiting the number to 30, but this did not help much. Any help would be appreciated.