Mac Help uses the Help Viewer application to display information about Mac OS or a specific application. It includes several features that enable you to find information—and use it—quickly:
Main Help window usually provides clickable links to introductory information and a table of contents.
Search feature enables you to search for topics containing specific words or phrases.
Links to related information enable you to move from one topic to a related topic.
Links to applications enable you to open an application referenced by a help topic.
Links to online information enable you to get the latest information from Apple’s Web site.
Although this feature’s generic name is Mac Help, help windows normally display the name of the application ...