Typographic Conventions

The following conventions are used in this book:

Constant Width

Used for source code samples and for quotations from source code within the text, including variable and function names . Constant width is also used for output printed by a computer and for the contents of files.

  Constant Bold  

Used for commands typed verbatim by the user .

Italic

Used for command names, directory names, and filenames. It is also used for new terms when they are defined.

Bold

Used for vectors (in the mathematical sense) and for command options.