SGML HTML XML What’s the Difference? (Part 1) - Computerphile

Why all the confusion, surely SGML, HTML & XML are just different versions of the same thing? Professor Brailsford on the perils of ’*ML’ Problems with Omitted End Tags: This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: Computerphile is a sister project to Brady Haran’s Numberphile. More at