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This book uses certain typographic styles to help you quickly identify important information and to avoid confusion over the meaning of words, such as on-screen prompts. In particular, look for the following styles:

 Italicized text indicates key terms that are described at length for the first time in a chapter. (Italics are also used for emphasis.)

 A monospaced font indicates code or command-line text. We often use bold to highlight important words or methods within a code sample.

 Italicized monospaced text indicates a variable.

In addition to these text conventions, which can apply to individual words or entire paragraphs, a few conventions highlight segments of text.

A tip is something to call particular attention to an aspect of working with a language feature or API.

A note indicates information that's useful or interesting. It is often something to pay special attention to for the exam.