Style Conventions

Items appearing in this book are sometimes given a special appearance to set them apart from the regular text. Here’s how they look:

Italic

Used for commands, email addresses, URIs, filenames, emphasized text, first references to terms, and citations of books and articles.

Constant width

Used for literals, constant values, code listings, and XML markup.

Constant width italic

Used for replaceable parameter and variable names.

Constant width bold

Used to highlight the portion of a code listing being discussed.

Tip

These icons signify a tip, suggestion, or general note.

Warning

These icons indicate a warning or caution.

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