> For the complete documentation index, see [llms.txt](https://docs.chuoicanho.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.chuoicanho.com/thao-tac-chung/nhap-xuat.md).

# Nhập/Xuất

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