https://blog.wongcw.com/2021/11/03/notability%e7%81%ab%e9%80%9f%e8%aa%bf%e6%95%b4%e6%94%bf%e7%ad%96%ef%bc%9a%e8%bd%89%e3%80%8c%e8%a8%82%e9%96%b1%e5%88%b6%e3%80%8d%e5%be%8c-%e8%80%81%e7%94%a8%e6%88%b6%e7%b9%bc%e7%ba%8c%e4%ba%ab%e5%8f%97/
Notability火速調整政策:轉「訂閱制」後 老用戶繼續享受既有權益