The following is a list of the typographical conventions used in this book:
- Italic
Used to indicate new terms, URLs, filenames, file extensions, directories, commands and options, and program names, and to highlight comments in examples. For example, a path in the filesystem will appear as
/Developer/Applications.-
Constant width Used to show code examples, the contents of files, or the output from commands.
-
Constant width bold Used for emphasis and user input in code.
-
Constant width italic Used in examples and tables 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.
- [RETURN]
[RETURN] (in square brackets, bold and all-caps) at the end of a line of code is used to denote an unnatural line break; that is, you should not enter these as two lines of code, but as one continuous line. Multiple lines are used in these cases due to page-width constraints.
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.
The thermometer icons, found next to each hack, indicate the relative complexity of the hack:
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