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        在编辑文本时，经常会有这样的需求，对特定列进行进行批量编辑。比如批量注释一段代码，或者删除待定字符（如一列空格）。幸运的是VIM支持列编辑模式。

假设文本内容：

Maximum length of a custom vocabulary phrase    Each supported Region: 256  No  The maximum number of characters in a custom vocabulary phrase.
Number of StartMedicalStreamTranscription Websocket requests    Each supported Region: 25   Yes The maximum number of StartMedicalStreamTranscription Websocket requests.
Number of StartMedicalStreamTranscription Websocket requests    Each supported Region: 25   Yes The maximum number of StartMedicalStreamTranscription Websocket requests.
Number of StartStreamTranscription Websocket requests   Each supported Region: 25   Yes The maximum number of StartStreamTranscription Websocket requests that you can make per second from this account in the current Region.
Number of concurrent HTTP/2 streams for streaming transcription.    Each supported Region: 25   Yes The maximum number of concurrent stream transcription jobs in this account in the current Region
Number of concurrent batch transcription jobs   Each supported Region: 250  Yes The maximum number of concurrent transcription jobs in this account in the current Region
Number of concurrent medical batch transcription jobs   Each supported Region: 250  Yes The maximum number of concurrent medical batch transcription jobs.
Number of concurrent medical batch transcription jobs   Each supported Region: 250  Yes The maximum number of concurrent medical batch transcription jobs.

把第二行到第八行的Number删除：

1. 找开文件
2. 光标移动到第二行行首
3. 按下ctrl+v，打开visual模式
4. 向下移动光标到第八行行首，然后向右移动光标覆盖r
   
5. 执行删除命令d

把Number再加回来：

1. 打开文件
2. 光标移动到第二行行首
3. 按下ctrl+v，打开visual模式
4. 向下移动光标到第八行行首
   
5. 执行插入命令I （大写的i）
6. 输入要插入的内容
   
7. 按下Esc