设置多行编辑控件的制表键停顿位。
打字机使用小小的金属制表键，在有多处空格时快速跳转直至达到特定的栏。
Typewriters used little metal tabs to slew the carriage rapidly over several spaces until it came to rest on a particular column.
以前树形控件是通过清单和链接创建的，因此用户必须使用制表键跳到每个树项目。
Previously, tree controls were created out of lists and links so the user had to TAB to each tree item.
请记住：当环境变量没有用空白(空格或制表键)与周围文本分开时，请使用更明确的花括号形式。
You'll want to remember to use the more explicit curly-brace form when your environment variable is not isolated from the surrounding text by whitespace (Spaces or tabs).
第一个规则表达式将与后面依次跟有任意数量的空格或制表键以及开始圆括号的字符串“main ”匹配。
The first regular expression will match the string "main" followed by any number of Spaces or tabs, followed by an open parenthesis.
bashshell使用制表键表示命令结束，因此当我们需要一个真正的制表符时，使用一个专用 tab 字符将非常方便。
The bash shell uses the tab key for command completion, so it can be handy to have a captive tab character that you can use when you want a real tab.
bashshell使用制表键表示命令结束，因此当我们需要一个真正的制表符时，使用一个专用 tab 字符将非常方便。
The bash shell uses the tab key for command completion, so it can be handy to have a captive tab character that you can use when you want a real tab.
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