> # Environment-Specific Information

> This book supports users of various operating environments. Where it provides information that does not apply to all supported environments, the following symbols are used to identify that information:

> Symbol | Environment
> --- | ---
> | Windows. The Windows symbol identifies information specific to all Microsoft Windows environments.
> | Windows 32-bit. The Windows symbol and the characters 32-bit identifies information specific to the Microsoft Windows 32-bit environment.
> | Windows 64-bit. The Windows symbol and the characters 64-bit identifies information specific to the Microsoft Windows 64-bit environment.
> | UNIX and Linux. Information specific to Linux and UNIX environments is identified by this symbol, which applies to all Linux and UNIX environments supported. UNIX is a registered trademark of The Open Group in the United States and other countries.
> | z/OS. Information specific to z/OS environments is identified by the characters z/OS.