Conventions Used in This Book

The screenshots (and their accompanying descriptions) in this book are mainly from Mac OS X 10.3, also known as Panther. In most cases, you'll find that the descriptions will still work fine for Mac OS X 10.2 (Jaguar).

This book uses the following abbreviations:

Hz, kHz, MHz, and GHz

Hertz (cycles per second), kilohertz (one thousand hertz), megahertz (one million hertz), and gigahertz (one billion, or 109 hertz)

bps, kbps, Mbps

Bits per second, kilobits (1024 bits) per second, and megabits (1,048,576 bits) per second

KB/s, MB/s

Kilobytes (1024 bytes) per second and megabytes (1,048.576 bytes) per second

This book uses the following typographic conventions:

Constant width

Constant width is used for listing the output of command-line utilities.


Italic is used for emphasis, for first use of a technical term, and for example URLs.


Ellipses indicate text that has been omitted for clarity.

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