(hypertext markup language) uses tags to define the structure and content of a web page. tags are enclosed in angle brackets (< >) and usually come in pairs: an opening tag and a closing tag.
these are not all of them but just a general list to get you going.
<b> bold</b>
<strong> strong</strong>
<i> italic</i>
<em> emphasized</em>
<u> underlined</u>
<s> strikethrough</s>
<mark> highlighted </mark>
<small> small text </small>
<sub> h2O </sub>
<sup> x2</sup>
<code> inline code </code>
<pre> preformatted text:
function hello() { console.log("Hello World"); }</pre>
<h1>
</h1>
<p> paragraph</p>
<br> line
break</br>
<hr> horizontal rule
<ul> unordered list:
<li> </li> <li></li>
</ul>
<ol> ordered list:
<li> </li> <li></li>
</ol>
<a href="www.atlanta.com"> anchor (link)</a>
<img src ="rottinginbed.jpg"> 
<audio controls>
<source src="drugstore.mp3"> <type="audio/mpeg">
</audio>
<video width="200" controls>
<source src="antelope-state-park.MOV" type="video/mp4">
</video>