text: **Artifacts**
  
  The following types of content are marked as <Artifact> in the PDF Content Tree and 
  
  have no PDF/UA tags: 
  
  Decorative objects 
  
  Header and footer 
  
  Objects that appear in Slide Master View 
  
  Table borders 
  
  Text formatting marks including underline, strikethrough, highlight, and shadow 
  
  Text in SmartArt objects 