This example shows how to create the single external toolbar for multiple editors on the page.
Some text between the external toolbar and Redactors.
<!-- external box for toolbar -->
<div id="my-external-toolbar"></div>
<!--elements -->
<textarea class="content"></textarea>
<textarea class="content"></textarea>
<!-- call -->
<script>
$R('.content', { toolbarExternal: '#my-external-toolbar' });
</script>