docs: function includesBackgroundConver (str, width, height) {
    let previousFragment = ''
    for (const fragment of str.split('\n')) {
      if (fragment === 'f') {
        const rectangle = previousFragment.split(' ')
        if (rectangle.length !== 5 || rectangle[0] !== '0' || rectangle[1] !== '0') {
          return false
        }
  
        const boxWidth = parseInt(rectangle[2])
        const boxHeight = parseInt(rectangle[3])
  
        return boxWidth > width && boxHeight > height
      }
  
      previousFragment = fragment
    }
  }