Files in the directory structure adhere to a Windows naming convention:

By default, file extensions are hidden. To display the file extensions you must disable the Hide extensions for known file types setting in the Folder Options control panel utility, as shown in the figure.

To display file extensions, use the following path:

Start > Control Panel > Folder Options > View > uncheck Hide extensions for known file types

The following filename extensions are commonly used:

The directory structure maintains a set of attributes for each file that controls how the file can be viewed or altered. These are the most common file attributes: