The following typographical conventions are used in this book:
- Italic
Indicates new terms, URLs, email addresses, search terms, 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, tags, attributes, and operators.
Constant width italic
Shows text that should be replaced with user-supplied values or by values determined by context.
Note
This icon signifies a tip, suggestion, or general note.
Warning
This icon indicates a warning or caution.
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