The following code run a server which listen on `/` and `/echo/*` If you go on `/` you are given a list of links pointing to url of the kind `/echo/*`. Click on them and you get a fading echo. Try it to see what I mean. ``` active haskell web -- show {-# LANGUAGE TypeFamilies, QuasiQuotes, MultiParamTypeClasses, TemplateHaskell, OverloadedStrings #-} import Yesod data MyApp = MyApp instance Yesod MyApp -- We Declare MyApp to be a Yesod App -- We declare the active URLs mkYesod "MyApp" [parseRoutes| / HomeR GET /echo/#String EchoR GET |] -- getHomeR doesn't take any parameter -- return an HTML page -- with two links to the same local URL -- /echo/Le%20Big%20Mac getHomeR = defaultLayout [whamlet|