To achieve common style (background, page header and footer), it is possible to define DCG non-terminals head//1 and/or body//1. Non-terminal page//1 checks for the definition of these non-terminals in the module it is called from as well as in the user module. If no definition is found, it creates a head with only the HeadContent (note that the title is obligatory) and a body with bgcolor set to white and the provided BodyContent.

Note that further customisation is easily achieved using html//1 directly as page//2 is (besides handling the hooks) defined as:

page(Head, Body) -->
        html([ \['<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 4.0//EN">\n'],
               html([ head(Head),
                      body(bgcolor(white), Body)
                    ])
             ]).