MS-DOS autocomplete in Microsoft Windows 2000 and above

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本文介绍在Microsoft Windows系统中设置命令自动补全功能的方法。通过打开注册表编辑器，依次找到特定文件夹和注册表键，将其值改为9。完成设置后关闭注册表编辑器，打开命令窗口，按Tab键即可使用自动补全功能。

Open the Microsoft Windows registry editor by clicking Start / Run / type Regedit and click ok.
In the Microsoft Windows registry editor open the below folders.

HKEY_LOCAL_MACHINE
Software
Microsoft
Command Processor
In the command processor open the below two registry keys and change their value to 9.

CompletionChar
PathCompleteChar
Once the above steps have been completed close out of the registry editor and open the command window by typing cmd in the Start / Run window. To use the auto complete feature press the tab key any type you wish to complete a directory. For example, if the directory you are currently in contains the "Program files" directory you could type "cd pr" and press tab, to have the auto completion option automatically type "cd "program files"".