Conventions Used in This Book
The following is a list of the typographical conventions used in this book:
- Italics
Used to indicate URLs, filenames, filename extensions, and directory names. For example, a path in the filesystem will appear as /Developer/Applications.
-
Constant width Used to show code examples, the contents of files, and console output, as well as the names of variables, commands, and other code excerpts.
-
Constant width bold Used to highlight portions of code, typically new additions to old code. Also used to show text you should type literally at a command-line prompt.
-
Constant width italic Used in code examples and other excerpts to show sample text to be replaced with your own values.
- Gray type
Used to indicate a cross-reference within the text.
A carriage return (
) 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.
Warning
This is a warning or note of caution, often indicating that your money ...