one of the documented procedures in this installation of the ACS
ad_scope_page_top   window_title   page_title   { context_bar_title "" }
What it does:
ad_scope_page_top combines header, page title, context bar and horizontal line and generates a standard looking top of the page. window_title is the title that should appear in the browser window. page_title is the title that will be displayed on the page. context_bar_title is the title appearing as the last item in the context bar. if context_bar_title is empty or not provided then page_title will be used instead of context_bar_title. if scope is not set in the topmost environment then public scope is assumed. if scope=group, it assumes that group_vars_set is set in the topmost environment.
Defined in: /web/philip/tcl/ad-scope.tcl

Source code:

    set db [ns_db gethandle subquery]
    set return_val "
    [ad_scope_header $window_title $db]
    [ad_scope_page_title $page_title $db]
    ns_db releasehandle $db
    append return_val "[ad_scope_context_bar_ws_or_index [ad_decode $context_bar_title "" $page_title $context_bar_title]]

    return $return_val