| The following font conventions are used in this book:
- Plain text
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Indicates menu titles, menu options, and menu buttons.
- Italic
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Indicates new terms, URLs, email addresses, filenames, file extensions, pathnames, directories, and Unix activities.
- Constant width
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Indicates commands, options, switches, variables, attributes, keys, functions, types, classes, namespaces, methods, modules, properties, parameters, values, objects, events, event handlers, XML tags, HTML tags, macros, the contents of files, or the output from commands.
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.
 | This icon signifies a tip, suggestion, or general note. |
|
 | This icon indicates a warning or caution. |
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