> 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/2017/03/02-1.md).

# 02

![](https://385430918-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M8iFCzaIpXf8zXqpE6I%2F-MTV7XPuwRouivkjw6dn%2F-MTV7xRrx3UtwoKkdoQ1%2Fimage.png?alt=media\&token=f9b69a62-c251-485d-ae64-e475c5e6d098)