Title of a book. On the web and on the Instant Information DVD, it may be a hot link to the book itself.

Command name or qualified command phrase.

Text displayed by the computer.

Text that is emphasized.

Text that is strongly emphasized.

Name of a keyboard key. Note that Return and Enter both refer to the same key.

Defined use of an important word or phrase.

Commands and other text that you type.

Name of a variable that you may replace in a command or function or information in a display that represents several possible values.

Contents are optional in formats and command descriptions. If the contents are a list separated by |, you must choose one of the items.

Contents are required in formats and command descriptions. If the contents are a list separated by |, you must choose one of the items.

Preceding element may be repeated an arbitrary number of times.

Separates items in a list of choices.

An element used in a markup language.

An attribute used in a markup language.