Q:

Special Character "/" as Return Address

This code is in an ActionResult function in a Controller, when the return url is:
RedirectToLocal("/");

What does "/" mean?
Couldn't find any documentations for RedirectToLocal.
Edit 1
Okay, found the definition of RedirectToLocal in the same project, so its not a built-in function like I thought:
    private ActionResult RedirectToLocal(string returnUrl)
    {
        if (Url.IsLocalUrl(returnUrl))
        {
            return Redirect(returnUrl);
        }
        else
        {
            //If no returnURL is stored
            return RedirectToAction("Index", "Home");
        }
    }

A:

The RedirectToLocal method is a helper method that makes sure that the URL for the redirect really is a local address. It helps you to protect your site from cross site scripting attacks, where an URL entered by a user could go to some harmful site.
Redirecting to / will take you to the default page of the site. This is definitely a local URL, so RedirectToLocal("/") does the same as Redirect("/").

