> 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/2017/02/11.md).

# 11

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![](https://385430918-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M8iFCzaIpXf8zXqpE6I%2F-MTTNp4i-_I5dbgKRa9P%2F-MTTNyQgWqB0Y8nhXOIq%2Fimage.png?alt=media\&token=826a3f51-bc10-45a4-b284-9168c137f04e)