<metal:header_macro define-macro="header">

<metal:block use-macro="here/global_defines/macros/defines" />

<tal:cache tal:define="lang context/@@plone_portal_state/language;
                       charset site_properties/default_charset|string:utf-8">
  <metal:cache use-macro="here/global_cache_settings/macros/cacheheaders">
    Get the global cache headers located in global_cache_settings.
  </metal:cache>
</tal:cache>

</metal:header_macro>