The following typographical conventions are used in this book: -
- 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 -
Used in examples and tables to show commands or other text that should be typed literally by the user . -
- Constant width italic
-
Used in examples, tables, and commands to show text that should be replaced with user-supplied values. -
- Color
-
The second color is used to indicate a cross-reference within the text. | This icon signifies a tip, suggestion, or general note. | | | This icon indicates a warning or caution. | | The thermometer icons, found next to each hack, indicate the relative complexity of the hack: |