DOCUMENT@0..106
  PARAGRAPH@0..67
    TEXT@0..66 "The following is a pa ..."
    NEWLINE@66..67 "\n"
  BLANK_LINE@67..68
    BLANK_LINE@67..68 "\n"
  PARAGRAPH@68..106
    DISPLAY_MATH@68..82
      DISPLAY_MATH_MARKER@68..70 "$$"
      TEXT@70..80 "\nE = mc^2\n"
      DISPLAY_MATH_MARKER@80..82 "$$"
    TEXT@82..105 " some text coming here."
    NEWLINE@105..106 "\n"

