anchor.diff:  |margin: [0.5in, 0.67in, 0.67in, 0.67in]
   
   |page_size
  -|named size, <<measurement-units,measurement array [2]>>
  +|named size, <<measurement-units,measurement array [width, height]>>
   |size: Letter
   |===
   
  
positive.code:   margin: [0.75in, 1in, 0.75in, 1in]
  ----
  
  === Colors
  
  The theme language supports color values in three formats:
  
negative.code: Even though the built-in fonts require the content to be encoded in WINANSI, _you still type your AsciiDoc document in UTF-8_.
  Asciidoctor PDF encodes the content into WINANSI when building the PDF.
  Any characters in your AsciiDoc document that cannot be encoded will be replaced with an underscore (`_`).
  
  === Bundled fonts
  
  Asciidoctor PDF bundles several fonts that are used in the default theme.
  You can also use these fonts in your custom theme.
  These fonts provide more characters than the built-in PDF fonts, but still only a subset of UTF-8.
  
  The family name of the fonts bundled with Asciidoctor PDF are as follows:
  
  http://www.google.com/get/noto/#/family/noto-serif[NotoSerif]::
  A serif font that can be styled as normal, italic, bold or bold_italic.
  
  http://mplus-fonts.osdn.jp/mplus-outline-fonts/design/index-en.html#mplus_1mn[Mplus1mn]::
  A monospaced font that maps different thicknesses to the styles normal, italic, bold and bold_italic.
  Also provides the circuled numbers used in callouts.
  
  http://mplus-fonts.osdn.jp/mplus-outline-fonts/design/index-en.html#mplus_1p[Mplus1pMultilingual]::
  A sans-serif font that provides a very complete set of Unicode glyphs.
  Cannot be styled as italic, bold or bold_italic.
  Useful as a fallback font.
  
  CAUTION: At the time of this writing, you cannot use the bundled fonts if you define your own custom fonts.
  This limitation may be lifted in the future.
  
  === Custom fonts
  
  