anchor.diff:    font_size: $base_font_size_large
   
   |font_style
  -|normal {vbar} italic {vbar} bold {vbar} bold_italic
  +|<<font-styles,Font style>>
   |title_page:
     font_style: bold
   
  
positive.code: . bottom
  . left
  
  === Colors
  
  The theme language supports color values in three formats:
  
negative.code:     font_size: $base_font_size_small
  
  |font_style
  |<<font-styles,Font style>>
  |title_page:
    revision:
      font_style: bold
  