> For the complete documentation index, see [llms.txt](https://18a.casket.jpnkn.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://18a.casket.jpnkn.com/master.md).

# PeerCastでアゲハチョウを観察しよう

![表紙](/files/-LLTBUCM0Amj7yV3H7bf)