| The following font conventions are used in this book: - Italic
-
Used for pathnames, filenames, program names, Internet addresses, such as domain names and URLs, and new terms where they are defined. - Constant Width
-
Used for command lines and options that should be typed verbatim, and names and keywords in program examples. Also used for parameters, attributes, expressions, statements, and values. - Constant Width Italic
-
Used for replaceable items, such as variables or optional elements, within syntax lines or code. - Constant Width Bold
-
Used for emphasis within program code examples. Pay special attention to notes set apart from the text with the following icons: | This is a tip. It contains useful supplementary information about the topic at hand. |
| | This is a warning. It helps you solve and avoid annoying problems. |
| |