anchor.diff:      (:div :class "footer"
         (:div :class "impressum"
           (:a :href "/impressum" "Impressum")))))
  -
  -;;; Website Header
  -
  -(let ((headings (make-hash-table :test #'equal)))
  -  (defun website-heading (key)
  -    (multiple-value-bind (value present) (gethash key headings)
  -      (if present
  -          value
  -          (string-capitalize key))))
  -
  -  (defun (setf website-heading) (value key)
  -    (setf (gethash key headings) value))
  -
  -  nil)
   
   ;;; Starting point
   
  
positive.code:                          (cons "main" (md "math.md")))))
  
  ;;; Poems
  
  (setf (website-heading "poetry") "Poetry")
  
  (defun make-poems-page ()
    (make-instance 'static-selector
  
negative.code: 
  ;;; Home
  
  (defun make-home-page ()
    (make-widget
     (f_% (with-html
  