code: func (e *plainTextInner) WriteTo(w io.Writer) (int64, error) {
  	s := ""
  
  	if (e.parent.Base().ln.indent+1)*2 <= len(e.ln.str) {
  		s = e.ln.str[(e.parent.Base().ln.indent+1)*2:]
  	}
  
  	if e.insertBr && !e.lastChild {
  		s += htmlBr
  	}
  
  	i, err := w.Write([]byte(s + lf))
  
  	return int64(i), err
  }
docs: // WriteTo writes data to w.