Quote Originally Posted by waldronate View Post
The required form of a "circle of power" depends on the summoner, the summoned, and the purpose of the summoning. Crossed triangles, crossed squares, a pentagram, and so on are all appropriate in context. The amount of language scribed as part of the circle also varies widely. The classic use of such circles is to contain a summoned entity until such time as a bargain can be struck for services.
However, be careful not to fall into this trap...

I'm going now.