> For the complete documentation index, see [llms.txt](https://amazon.sanshiliu.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://amazon.sanshiliu.com/dang-an-guan/chang-jian-wen-ti/xuan-pin-xiang-guan.md).

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