Conventions Used in This Book

The following typographical conventions are used in this book: Italic

Indicates new terms, URLs, email addresses, filenames, and file extensions. Constant width

Used for program listings, as well as within paragraphs to refer to program elements such as variable or function names, databases, data types, environment variables, statements, and keywords.

Constant width bold

Shows commands or other text that should be typed literally by the user. Constant width italic

Shows text that should be replaced with user-supplied values or by values determined by context.

This icon signifies a tip, suggestion, or general note.

This icon indicates a warning or caution.

This icon indicates a warning or caution.

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