In LibreOffice Writer (or Calc, Impress, etc.), you can easily change text formatting such as Bold, Italic, and Underline. Here’s how:

 1. Using Toolbar Buttons
- Select the Text you want to format.
- Use the toolbar at the top to apply formatting:
  - Bold: Click the B icon.
  - Italic: Click the I icon.
  - Underline: Click the U icon.