Conventions in this Book

Throughout this book, we have used the following typographic conventions:

Constant width indicates a language construct such as a language statement, a constant, or an expression. Lines of code also appear in constant width, as do functions and method prototypes.

Italic represents intrinsic and application-defined functions, the names of system elements such as directories and files, and Internet resources such as web documents and email addresses. New terms are also italicized when they are first introduced.

Constant width italic in prototypes or command syntax indicates replaceable parameter names, and in body text indicates variable and parameter names.

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