> 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/2020/01/22.md).

# 22

![](https://385430918-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M8iFCzaIpXf8zXqpE6I%2F-MTV2GJzXkH02WZ12BKf%2F-MTV2N_-LTsTg_wc9XyS%2Fimage.png?alt=media\&token=bfac1b34-5952-4f8e-aec1-ff489a5e9fbd)