The use of space in the mainstream performing arts is based on the division of the acting and performing spaces with an imaginary wall. The sharp division of the space by this invisible conventional border, also called the fourth wall, originated from the fundamentally distinct role definitions assigned to the audience and the actors. On the other hand, especially since mid-twentieth century, due to the fast improvement in mass media technologies audiencing has widely shifted from the public space to the private space. Because of this shift the staging forms appropriate to the traditional space order became unresponsive to the needs of new acting and audiencing, and caused a search for alternative ways. In this respect, especially since th...