| The following typographical conventions are used in this book:
- Plain text
Indicates menu titles, menu options, menu buttons, and keyboard accelerators (such as Alt and Ctrl).
- Italic
Indicates new terms, URLs, email addresses, filenames, file extensions, pathnames, directories, and Unix utilities.
- Constant width
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.
 | Indicates a tip, suggestion, or general note. |
|
 | Indicates a warning or caution. |
|
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