> 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/2016/11/25.md).

# 25

![](https://385430918-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M8iFCzaIpXf8zXqpE6I%2F-MGl_WtbWYPO64PEdAgO%2F-MGl_uxn1Ys68DAMx4cD%2Fimage.png?alt=media\&token=d6eaf5be-58a2-4bee-b348-02b7a73dd8de)