Conduit Bender Help

I did see a video once, but I can’t remember what the symbols mean. I know the star has some thing to do with it, but what? I want to bend the conduit 90°. By the way the conduit is 1/2" as well as the bender.

Try this:

http://greenlee.ebizcdn.com/0beb34df7e9615cd43b9090989ca4848