Contact Information, not Arbitrary Addresses. Deploying Applets for Specific Browsers. Why would a five dimensional creature need memories? Hoping we can agree on things more, or have a universal package install on browsers the vendors can use to keep specifications working the same. Tag omission in text/html: Neither tag is omissible. It's a good tool to check the overlapped elements on the page. Join the fight for a healthy internet. On the server, you can expose attack vectors for accessing sensitive data and remote code execution. Yeah I saw the wikepedia page on the motivation to create WHATWG. Is MDN wrong about the html main tag in their documentation? Many web sites contain HTML code like: