Typographical Conventions

The following is a list of typographical conventions used in this book:

Constant width

Is used to show the contents of code files or the output from commands, and to indicate source code keywords that appear in code.

Constant width bold

Is used to indicate user input.


Is used for file and directory names, program and command names, command-line options, URLs, and for emphasizing new terms.

This icon indicates a tip, suggestion, or general note.

This icon indicates a warning or caution.