The following is a list of the typographical conventions used in this book.
- Italics
Used to indicate URLs, filenames, filename extensions, and directory/folder names. For example, a path in the filesystem appears as /Developer/Applications.
-
Bold
Used to indicate a user-supplied value.
-
Constant width
Used to show code examples, the contents of files, console output, as well as the names of variables, commands, and other code excerpts.
- Color
The second color indicates a cross reference within the text.
You should pay special attention to notes set apart from the text with the following icons:
Tip
This is a tip, suggestion, or general note. It contains useful supplementary information about the topic at hand.
Warning
This is a warning or note of caution, often indicating that your money or your privacy might be at risk.
The thermometer icons, found next to each hack, indicate the relative complexity of the hack:
beginner
moderate
expert
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