Source: http://www.wendycholbi.com/anchor-links-jump-links/

Add an ID to the header in text/html mode like this:

<h3 id="chapter1">Chapter 1</h3>Code language: HTML, XML (xml)

Then create a hyperlink to the header with #chapter1

• On the same: #chapter1
• On another page: https://www.mydomain.com/#chapter1