Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. TODO. W3C groups often publish tutorials and online courses to help people learn about W3C technologies.We invite you to let us know about other tutorials at site-comments@w3.org. Type in your address, copy the HTML embed code, and paste the iframe into your website's code. Definition and Usage. In its most basic form, the HTML Site Map page contains a list of standard hypertext links to all the pages on a website. HTML Arrows is shared by Toptal Designers, the marketplace for hiring elite UI, UX, and Visual designers, along with top developer and finance talent.Discover why top companies and start-ups turn to Toptal to hire freelance designers for their mission-critical projects. My first example would be a link to say WUnderground weather on my weather page in my sitemap. Because the sound file plays automatically when the page loads, and this tag is only supported in Internet Explorer, we recommend using