> # 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:

> | Windows. Information specific to the Microsoft Windows 2000, Windows Server 2003 (32-bit), Windows XP, and Windows Vista environment is identified by Windows symbol.
> | Windows 32-bit. Information specific to the Microsoft Windows 32-bit environment is identified by the Windows symbol and the characters 32-bit.
> | Windows 64-bit. Information specific to the Microsoft Windows 64-bit environment is identified by the Windows symbol and the characters 64-bit.
> | 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 and OS/390 environments is identified by the characters z/OS.