The following font conventions are used in this book:

Italic is used for pathnames, filenames, Internet addresses, and new terms where they are defined.
Constant Width is used for code examples, command lines and options that should be typed verbatim, and VB.NET keywords.
Constant Width Italic is used for replaceable items, such as variables or optional elements, within syntax lines or code.
Constant Width Bold is used for emphasis within program code.

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 or avoid annoying problems.