Graphviz Example
<script type="text/vnd.graphviz" id="graphviz">
digraph G {
"browser" ->
"http_request" ->
"server" ->
"routes" ->
"controller" ->
"model" -> "controller"
"controller" -> "response"
"response" -> "view" -> "html"
"response" -> "json"
"response" -> "browser"
}
</script>