This <p>tag is in fact in a <div> class, alongside this link back to the main Scrawl.js page.
In the initial HTML markup for this page, this <p> element followed the <canvas> element within the 'container' <div>. But picking up canvases and putting them into stacks causes them to be placed at the end of their parent element's child chain, which is why this text now appears above the stack <div> and its canvas element.
Known browser issues: ???