How to add a div into the top right corner of a textarea, and have the text start after the div (pic inside)
<p>So the user can type a command that activates a "reply"-mode. How can I have a badge/div/label/etc in the top left corner of the textarea that the user's text starts after.</p>

<p>Here is a terrible representation if what I want to acheive (this is absolutely positioned, and the text has a bunch of spaces, so not a real solution, just for an example.)</p>

<p><a href="https://i.stack.imgur.com/R6WO9.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/R6WO9.png" alt="enter image description here"></a></p>