[web-devel] Upgrading from Yesod 4.0 to 5.0

Hi all, I'm upgrading UrbanListing to Yesod 5.0 from 4.0 after a long hiatus. So I'm feeling a bit rusty :) I was wondering about the new signature for StaticRoute:

StaticRoute [String] [(String, String)]

What is the purpose of the second argument [(String),(String)]? I couldn't pick it up from the documentation. Regards, Rehno