Music Venue Trust
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.
，这一点在下载安装 谷歌浏览器 开启极速安全的 上网之旅。中也有详细论述
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