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:
Hertz (cycles per second), kilohertz (one thousand hertz), megahertz (one million hertz), and gigahertz (one billion, or 109 hertz)
Bits per second, kilobits (1024 bits) per second, and megabits (1,048,576 bits) per second
Kilobytes (1024 bytes) per second and megabytes (1,048.576 bytes) per second
This book uses the following typographic conventions:
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.