ViewRadius not working as expected

Why does ViewRadius not work as it is defined in the help files? I tried rs.ViewRadius(view= 'Front', radius= 10.0) and I get the following error message: “Magnify() takes at least 2 arguments (1 given)

Yep, there are couple of problems with this function.

http://mcneel.myjetbrains.com/youtrack/issue/RH-30672