text: CHAR_OPEN = '{'
  CHAR_CLOSE = '}'
  CHAR_TAG_OPEN = '<'
  CHAR_TAG_CLOSE = '/'
  CHAR_TAG_END = '>'
  CHAR_SEP = ','
  CHAR_HASH = '#'
  CHAR_ESCAPE = "'"
  
  OFFSET = 'offset:'
  
  VAR_CHARS = [
      CHAR_OPEN,
      CHAR_CLOSE
  ]
  
  TAG_CHARS = [
      CHAR_TAG_OPEN,
      CHAR_TAG_CLOSE,
      CHAR_TAG_END
  ]
  
  TAG_CLOSING = '/>'
  TAG_END = '</'
  
  SPACE_CHARS = [
      0x20,
      0x85,
      0xA0,
      0x180E,
      0x2028,
      0x2029,
      0x202F,
      0x205F,
      0x2060,
      0x3000,
      0xFEFF
  ]
  
  CLOSE_TAG = {}
  