Guide

1. Go to your WordPress dashboard, navigate to Posts or Pages, and open the content where you want to add underlined text.

2. Click the + button to add a new block.

3. Select the Custom HTML block.

4. Type or paste the following HTML code: <p>This is an <u>underlined</u> text.</p>

5. You can replace the text inside the <u> tags with your desired text.

6. Click Preview to see how it looks and then click Save to save your changes.