> For the complete documentation index, see [llms.txt](https://tidyline.gitbook.io/today-i-learned/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tidyline.gitbook.io/today-i-learned/master.md).

# Today I Learned

![enter](https://3047460807-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LWtPF-YoZZ3nRCFnKWz%2F-LXJAP-vh7V5Hc3h0B9Z%2F-LXJASPcvXyykDX47CiL%2Fenter.gif?generation=1548674268655198\&alt=media)