anchor.diff:                                          true ->
                                               yaws:outh_set_static_headers(
                                                 Req, UT, H, Range),
  +                                            maybe_set_page_options(),
                                               Do_deliver();
                                           false ->
                                               deliver_xxx(CliSock, Req, 412)
  
positive.code:     Req = ARG#arg.req,
      H = ARG#arg.headers,
  
      Regular_allowed = ['GET', 'HEAD', 'OPTIONS'],
      if
          Req#http_request.method == 'GET';
          Req#http_request.method == 'HEAD' ->
              ETag = yaws:make_etag(UT#urltype.finfo),
  
negative.code:                 _ ->
                      Do_deliver =
                          case Req#http_request.method of
                              'HEAD' -> fun() -> deliver_accumulated(CliSock),
                                                 done end;
                              _      -> fun() -> deliver_file(CliSock, Req,
                                                              UT, Range) end
                          end,
                      case H#headers.if_none_match of
                          undefined ->
  