how to link to other pages in html code example

Example 1: html links

<a href="url">link text</a>

Example 2: include html page in another html page

A simple server side include directive to include another file found in the same folder looks like this:

<!--#include virtual="a.html" --> 
Also you can try:

<!--#include file="a.html" -->

Example 3: link to external site html

<a href="https://www.example.com">This is a link</a>