Create a list <ol>
Add a <li>
Insert a list into <li>
Add <li> to the sub-level list
HTML Entities (https://www.freeformatter.com/html-entities.html)
Special characters rendered by a special code
Always starts with & and ends with ;
The code goes in between
<= less than sign>= greater than sign
Example: <map> =<map>
<code></code> adds emphasis by using monospace font and changing the color
<pre> renders all spaces and line breaks