I second this. HTML has very specific rules about which start- and end-element tags can be omitted (and will be inferred if omitted) based on HTML's SGML herita

I second this. HTML has very specific rules about which start- and end-element tags can be omitted (and will be inferred if omitted) based on HTML's SGML heritage and the formulation of HTML as an SGML vocabulary. My slides explaining a minimal example are at [1] (the TALK button/link), and the full details are at [2] (meanwhile updated for HTML 5.2). [1]: http://sgmljs.net/docs/sgml-html-tutorial.html http://sgmljs.net/docs/sgml-html-tutorial.html [2]: http://sgmljs.net/docs/html5.html http://sgmljs.net/docs/html5.html