anchor.diff:  
   -opaque attribute_type() :: {atom(), string()}.
   -ifdef(forward_or_recursive_types_are_not_allowed).
  --type html_type() :: {atom(), [attribute_type()], term()} | [{atom(), [attribute_type()], term()}].
  +-opaque html_type() :: {atom(), [attribute_type()], term() | [term()]}.
   -else.
  --type html_type() :: {atom(), [attribute_type()], html_type() | string()} | [{atom(), [attribute_type()], html_type() | string()}].
  +-opaque html_type() :: {atom(), [attribute_type()], html_type() | [html_type()] | string()}.
   -endif.
   
   %% @doc Checks whether the current request is a post operation.
  
positive.code: -spec renderGossip([gossip_pv()]) -> [html_type()].
  renderGossip([]) -> [];
  renderGossip([V1]) ->
      renderGossip2(V1, {false, {"", V1}}, {false, {"", V1}});
  renderGossip([V1, V2]) ->
      renderGossip2(V1, {true, V2}, {false, {"", V2}});
  renderGossip([V1, V2, V3 | Rest]) ->
      lists:append(
        renderGossip2(V1, {true, V2}, {true, V3}),
  
negative.code: renderGossip2(PV1, PVE2, PVE3) ->
      [renderGossipHead(PV1, PVE2, PVE3),
       renderGossipData(PV1, PVE2, PVE3, "Size (leader election)",
                        size_ldr, fun(V) -> lists:flatten(io_lib:format("~.2f", [V])) end),
       renderGossipData(PV1, PVE2, PVE3, "Size (key range)",
                        size_kr, fun(V) -> lists:flatten(io_lib:format("~.2f", [V])) end),
       renderGossipData(PV1, PVE2, PVE3, "Average load",
                        avgLoad, fun(V) -> lists:flatten(io_lib:format("~.2f", [V])) end),
       renderGossipData(PV1, PVE2, PVE3, "Maximum load",
                        maxLoad, fun(V) -> lists:flatten(io_lib:format("~B", [V])) end),
       renderGossipData(PV1, PVE2, PVE3, "Minimum load",
                        minLoad, fun(V) -> lists:flatten(io_lib:format("~B", [V])) end),
       renderGossipData(PV1, PVE2, PVE3, "Standard deviation of the load",
                        stddev, fun(V) -> lists:flatten(io_lib:format("~.2f", [V])) end)
       ].
  
  -spec renderGossipHead(gossip_pv(), {boolean(), gossip_pv()}, {boolean(), gossip_pv()}) -> html_type().
  