How to split a redirect?: Film.Superman

I was looking earlier at the pages for Film/Superman, Superman II, and noticing that Superman III and Superman IV don't exist yet, and planning to create them. Then I noticed a bunch of examples on the Film/Superman page were actually for "II" and started moving them, and then....

I kind of assumed Superman Returns had a page of its own, as a recent and prominent movie, not to mention not really being part of the above 4-picture series. But apparently it's a redirect to the plain old Film/Superman page. How to split it off, exactly?

Here you go.

To edit a redirect, edit another page, then alter the url.

Go to the edit screen of Main/Superman and then type "Returns" after Superman in the url.

It used to be a lot easier to edit redirects. I'm not sure why that's changed... though that's a subject for another topic.