webpage/src/redirects.ss

(define url
  (case argv2
    ("index" "index.xhtml")))

(!html
  (head
    (title "redirect:" argv2)
    (meta 'http-equiv "refresh"
          'content `("0; url=" ,url)))
  (body
    "If you were not redirected automatically please follow this: "
    (a* 'href url argv2)))