define url-map
  "/pages"
    get () => (list-pages),
    get ("^(?P<name>\\w+)/?$") => (show-page),
    get ("^(?P<name>\\w+)/edit$") => (show-edit-page),
    get ("^(?P<name>\\w+)/delete$") => (show-delete-page),
    post () => (create-page),
    post ("^(?P<name>\\w+)(/(edit)?)?$") => (edit-page),
    post ("^(?P<name>\\w+)/delete$") => (delete-page);
  "/foo" 
    ...
end;