If you see Spaces instead of tabs in your own text2 file, refer to expand, unexpand, and tr, later in this article to see how to switch between tabs and Spaces in a file.
如果您自己的text2文件中显示的是空格而不是制表符，那么请参考本文后面的expand、unexpand和tr一节，了解在文件中如何在制表符和空格之间切换。
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