numbering line [计] [通信] 编号行
multi-line subscriber numbering 多线订户编号
full numbering line 完整编号行
numbering of in-line engine cylinders 直排发动机气缸编号
One of the options you can set is number, which turns line numbering on and off (see Listing 1).
可以设置的选项之一是number，它的作用是打开和关闭行号(见清单1)。
After putting vi into command mode, you can type: set number and press Enter to turn line numbering on (see Listing 2).
让vi进入命令模式之后，可以输入：set number并按回车来打开行号(见清单2)。
When this option is cleared, for example, to facilitate the use of line numbering, you can scroll to the right to see the ends of long lines.
例如，当清除此选项时，可以加强行号的使用，您可以卷动到右边以便查看长文字行的结尾部分。
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