anchor.diff:  [CAUTION#transform-unicode-letters]
   ====
   Ruby 2.5 and better has built-in support for transforming the case of any letter defined by Unicode.
  -You no longer need the `activesupport` or `unicode` gem to transform characters beyon the Basic Latin character set (e.g., accented characters).
  +You no longer need the `activesupport` or `unicode` gem to transform characters beyond the Basic Latin character set (e.g., accented characters).
   ====
   
   === Colors
  
positive.code: ----
  
  The `&shared_footer` assigns an ID to the YAML subtree under the `recto` key and the `*shared_footer` outputs a copy of it under the `verso` key.
  This technique can be used thoughout the theme file as it's a core feature of YAML.
  
  ==== Attribute References
  
  
negative.code: ----
  
  As it stands, the converter doesn't do anything differently than the primary converter because we haven't yet overridden any of its methods.
  Let's do that now, starting by overriding the thematic break (aka horizontal rule) to make it render like a ribbon:
  
  [source,ruby]
  ----
  