0.3. Conventions

This book uses the following typographical conventions:

Italic

For program names, filenames, system names, email addresses, and URLs and for emphasizing new terms when first defined

Constant width

In examples showing the output from programs, the contents of files, or literal information

Constant-width italic

General syntax and items that should be replaced in expressions

TIP: Indicates a tip, suggestion, or general note.

WARNING: Indicates a warning or caution.

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