ROOT@0..60
  DOCUMENT@0..60
    Heading@0..8
      AtxHeadingMarker@0..1
        AtxHeadingMarker@0..1 "#"
      WHITESPACE@1..2 " "
      HeadingContent@2..6
        TEXT@2..6 "Math"
      NEWLINE@6..8 "\r\n"
    BlankLine@8..10
      BlankLine@8..10 "\r\n"
    MathBlock@10..25
      BlockMathMarker@10..12 "$$"
      NEWLINE@12..14 "\r\n"
      MathContent@14..21
        TEXT@14..19 "x = y"
        NEWLINE@19..21 "\r\n"
      BlockMathMarker@21..23 "$$"
      NEWLINE@23..25 "\r\n"
    BlankLine@25..27
      BlankLine@25..27 "\r\n"
    PARAGRAPH@27..39
      TEXT@27..37 "More text."
      NEWLINE@37..39 "\r\n"
    BlankLine@39..41
      BlankLine@39..41 "\r\n"
    MathBlock@41..60
      BlockMathMarker@41..43 "$$"
      NEWLINE@43..45 "\r\n"
      MathContent@45..56
        TEXT@45..54 "a + b = c"
        NEWLINE@54..56 "\r\n"
      BlockMathMarker@56..58 "$$"
      NEWLINE@58..60 "\r\n"

