--- title: 'tidy' disqus: Notes tags: Book --- ![](https://i.imgur.com/8tXiSRu.png) ![](https://i.imgur.com/cbdLGcz.png) ![](https://i.imgur.com/ZCBsCZQ.png) ![](https://i.imgur.com/aSoZoZs.png) ![](https://i.imgur.com/c6hJhIG.png) ![](https://i.imgur.com/KfApN4s.png) ![](https://i.imgur.com/pNgGkFl.png) ![](https://i.imgur.com/19XvHGI.png) ![](https://i.imgur.com/fxIr5wd.png)