Екатерина Смирная (корреспондент отдела оперативной информации)
圖像來源，Dan McKenzie
，这一点在快连下载安装中也有详细论述
Terminal applications have a “cursor” that they can move around, just like a text editor. You can tell that cursor “go to line 3, delete everything, then print out this new text” by using VT100 sequences. And you can use it to replace existing characters with new ones, without re-emitting a whole line.
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