anchor.diff:        size: 24
   |===
   
  -. The top and bottom padding values are ignored on admonition-label-padding.
  -. `<name>` can be `note`, `tip`, `warning`, `important`, or `caution`.
  +1. The top and bottom padding values are ignored on admonition-label-padding.
  +2. `<name>` can be `note`, `tip`, `warning`, `important`, or `caution`.
   All icon types must be grouped under a single `icons` category.
   In other words, _do not_ declare the `icons` category multiple times.
   The subkeys in the icon category cannot be flattened (e.g., `tip-name: far-lightbulb` is not valid syntax).
  -. Required.
  +3. Required.
   See the `.yml` files in the https://github.com/jessedoyle/prawn-icon/tree/master/data/fonts[prawn-icon repository] for a list of valid icon names.
   The prefix (e.g., `fas-`) determines which font set to use.
   If the prefix is not specified, `fa-` is assumed.
  
positive.code: |section:
    indent: [0.5in, 0]
  |===
  . Applies to the section body only, excluding section titles and discrete headings.
  A single value gets applied to both the left and right side (e.g., `0.5in`).
  A two-value array configures the left and right side independently (e.g., `[0.5in, 0]`).
  
  
negative.code:   text-indent: 18
  |===
  
  1. Controls the margin between adjacent paragraphs.
  Useful when using indented paragraphs.
  
  [#keys-block]
  