[%  # root URL
    root = root_url or '/';

    # define library data
    libs = {
    	html = {
    	    name  = 'html'
    	    title = "HTML"
    	    pages = {
    		index   => 'Index Page'
    		rgb     => 'RGB Colours'
    		headers => 'Headers, Footers and Pages'
    		lists   => 'Lists, Items and Indents'
    		links   => 'Links and Buttons'
    		tables  => 'Tables, Rows and Cells'
    		bars    => 'Bars, Boxes and Edges'
    		menus   => 'Menus and Menu Bars'
    	    }
    	    order => [ 'index', 'rgb', 'headers', 'lists',
    		       'links', 'tables', 'bars', 'menus' ]
    	}
    	splash = {
    	    name  = 'splash'
    	    title = "Splash!"
    	    pages = {
    		index   => 'About Splash!'
    		config  => 'Configuration'
    		text    => 'Text'
		buttons => 'Buttons, Bars and Panels'
		menus   => 'Menus and Menu Bars'
		tabs    => 'Tabs and Tabbed Boxes'
		tabsets => 'Tab Sets and Boxes'
		dropbox => 'Dropped Boxes'
    	    }
    	    order => [ 'index', 'config', 'text', 'buttons', 
		       'menus', 'tabs', 'tabsets', 'dropbox' ]
    	}
    	ps = {
    	    name  = 'ps'
    	    title = "PostScript"
    	    pages = {
    		index   => 'Index Page'
    		marks   => 'Various useful marks'
    	    }
    	    order => [ 'index', 'marks' ]
    	}
    };
    liblist = [ libs.html, libs.splash, libs.ps ];

    # build the main menu
    menu = [ ];
    FOREACH lib = liblist;
	item = { 
	    link => "../$lib.name/index.html", 
	    text => lib.title,
	};
	menu.push(item);
    END;

    # build the tab sets
    FOREACH  library = libs.values;
	library.tabs = [ ];
	FOREACH page = library.order;
	    tab = { text  => page
	            title => library.pages.$page
		    link  => "${page}.html" } ;
	    library.tabs.push(tab);
	END ;
    END;

    PROCESS splash/config
-%]