Understanding 'aside'
http://html5doctor.com/understanding-aside/

HTML 5 Doctor
2009

Abstract:

HTML 5 offers a new element to mark additional information that can enhance an article but isn’t necessarily key to understanding it. However, in the interpretation of 'aside' there lies confusion as to how it can be used, and with that there is demand for the Doctor to step up and clear the air. In this article I will look at what 'aside' was created for, including sample uses and how not to use this useful, misunderstood element.