text: Make magic: use Heading styles 
  
  The heading for this part (“Make magic: use Heading styles”) looks the same as the other 
  headings in this document, but it’s not as useful. It’s formatted with font settings (font, size, and 
  color), while the other headings are formatted with a Heading style (Heading 1, to be exact). 
  
  See the little triangle when you mouse over those other 
  headings? 
  
  You can collapse and expand everything under a heading, like an 
  outline. But this one’s not working. Let’s fix it. 