The Chicago Pizza Model

A useful metaphor for expressing modularity

Now implemented at http://www.hcu.ox.ac.uk/TEI/pizza.html

<!ENTITY % base "deepDish|thinCrust|stuffed">
<!ENTITY % topping "pepperoni|mushrooms| 
                    sausage|anchovies... " >
<!ELEMENT pizza ( %base;, tomatoSauce, 
                  cheese, (%topping;)*) >