Click "Bullets and Numbering." Select your list name from the List drop-down menu; for example, "Outline." In the Style Name box, enter the name that you assigned to the style; for example ...

CSS, or Cascading Style Sheets ... you can also customize the thickness of the bullet threads. This is done by changing the ‘outline guideline width’ value in the CSS snippet.

Bullet points and Roman numeral outlines are ... Provided you have high-quality, relevant content, a Roman-numeral style outline can be an appropriate way to organize your thoughts in PowerPoint.