> For the complete documentation index, see [llms.txt](https://thinking.simonaking.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://thinking.simonaking.com/archives/2020/11/19.md).

# 19

1. ![image-20201122151223459](https://3776288288-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MPTTWwcxuzDkZnKy-OM%2Fsync%2Fd5ec26093c06a6859f54e4aa9c398dd0f1c246f8.png?generation=1609073070779410\&alt=media)
2. ![image-20201122151229577](https://3776288288-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MPTTWwcxuzDkZnKy-OM%2Fsync%2Fd5157a9d0e88887afcc18d00602a707b27b6c0b6.png?generation=1609073070272671\&alt=media)