how to configure MapRoute so that on default page I shouldn't need to write full action path to use parameter? for example currently I can use

http://localhost:1035/Home/Index/test

(test is the optional parameter value of string type)

but

http://localhost:1035/test

gives me an error. I understand that somehow I could fix it with a new MapRoute for default controller. but how could this route look like?

thanks.