I’ve heard the sentiment “HTML is easy” more times than I can count. And while I would agree that HTML is perhaps easier to learn than other programming languages, you shouldn’t take it for granted.

HTML is a powerful markup language which can be used to give our web applications structure and provide powerful accessibility benefits, but only when used appropriately.

Thus, today we’ll discover ten HTML elements you might not have known existed in the hopes that you can create more accessible, and structurally-sound web applications.

You can customize nXML mode so that / automatically inserts the rest of the end-tag when it occurs after ‘<’, by doing

M-x customize-variable RET nxml-slash-auto-complete-flag RET

and then following the instructions in the displayed buffer.