it will span a 1.75-acre site, and will be home to 241 units. all you have to do is shake the toy, and the aluminum powder will re-coat the screen and erase the markings. sorry to hold forth, but it’s been very annoying. even after it is picked, it stays hard. why have they been kept in dark about it? i will continue to go to her for the rest of our lives. we ship fast, so order low tack decals today! however, i was intrigued by the concept and decided to build my own. good thing, too, since it turns into a life-and-death reality. 