> For the complete documentation index, see [llms.txt](https://www.oulan.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.oulan.com/2019/08/09.md).

# 09

<figure><img src="https://385430918-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M8iFCzaIpXf8zXqpE6I%2Fuploads%2FNySCGSjhKuILVOypM2yL%2Fimage.png?alt=media&amp;token=6a6562a1-a3fb-4f00-87c9-26cab36892c3" alt=""><figcaption></figcaption></figure>