(egs :all
     (eg '(demo :1.1)
	 :of "Simple Symbolic Computation")
     (eg '(demo :1.2)
         :of "Introduction to Variables")
     (eg '(demo :1.4)
         :of "Lists")
     (eg '(demo :1.5)
         :of "Defining New Functions")
     (eg '(demo :1.6)
         :of "Using Functions")
     (eg '(demo :1.7)
         :of "Higher-Order Functions"))
     



(defun show-of ()
  (demo :all))