The list below presents the most frequently encountered HTML tags:
<h1> to <h6>: headings or titles<p>: paragraph<a>: hypertext link<img>: image<br>: line break<div>: division, is used to differentiate sections in pages<span>: generic text container, don't format the text, usefull to add attribute to a section of text<hr> : horizontal line (separator)<table>: table<tr>: table row<td>: table division or cell<ul>: unordered list<ol>: ordered list<li>: list item<iframe>: insert another HTML page in the current page (use by Youtube players for example)<video>: video<i>: italic, indicates a text that differs from the main content<b>: bold text, to bring the reader's attention<em>: emphasis, insists on a text element<strong>: brings an important, serious or urgent character<u>: underlined text<strike>: strikethrough textThese last tags, generally used for text formatting are now replaced by Cascading Style Sheets (CSS).