VIM提供了很多 复合命令，可以把两个动作合并为一次按键。极大提高了编辑效率。以下是一些具体的例子：

       除了表中说明的功能之外，这些命令还有一个共同特点：它们都会从普通模式切换到插入模式。结合重复命令.将产生奇特的反应。

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.

现在要隔行在 Number 之前加上The，用列编辑不适用，就可以用组合指令加.来简化操作：

1. 光标移动到第二行任意位置
   
2. 执行命令I ，这时光标移到行首并转为编辑模式
3. 输入 The ，并按Esc
   
4. 重复执行jj.