anchor.diff:      font_size: 10
   
   |font_style
  -|normal {vbar} italic {vbar} bold {vbar} bold_italic +
  +|<<font-styles,Font style>> +
   (default: normal)
   |table:
     foot:
  
positive.code:   font_size: 18
  
  |font_style
  |normal {vbar} italic {vbar} bold {vbar} bold_italic +
  (default: bold)
  |heading:
    font_style: bold
  
negative.code:   font_size: 9
  
  |font_style
  |<<font-styles,Font style>>
  |footer:
    font_style: italic
  
  