Address Book. These settings pertain to the way Entourage formats addresses and phone numbers, whether to link contact records to messages sent to and received from contacts, and whether to color-categorize messages from contacts to match their contact records.

Calendar. These settings govern the layout of the Calendar, how Entourage handles events, and the default reminder settings.

Fonts. These settings control the font in which Entourage displays list items, HTML messages, and plain-text messages, and the font in which items are printed.

General. These are the random settings that don’t fit into any of the other categories. These settings govern the behavior of the Folder list, keyboard shortcuts, editing tools, font menu, dates, error logs, and units of measurement. In addition, from this page you can set Entourage as your default mail client, meaning that when you choose an option in another program to send something from that program, an Entourage message window will open.

Notification. These settings govern whether a desktop alert appears when you receive a new mail item, and what information appears in the alert. You can also specify whether to sound audio alerts when you start Entourage, when new mail items arrive, when you send mail, when the mail system encounters an error, when Entourage checks for new mail items and there are none, and when reminders (for example, for appointments and tasks) appear.

Security. These settings help to protect you from external threats. The default, most secure settings display warnings when an external application tries to send mail or access your Address Book, do not allow the display of complex HTML in messages, and do not download pictures in messages without your explicit approval, on a message-by-message basis.

Spelling. These settings govern the behavior of the built-in spelling checker. You can turn the spelling checker on or off, check the spelling in all outgoing e-mail messages, display or restrict suggested corrections, and ignore certain types of text. You can also choose the dictionary language you want, from among 17 options.

Spotlight. From this setting group, you can opt to include Entourage items (turned on by default) and attachments (turned off by default) in Spotlight search results. If Spotlight is having trouble locating Entourage items, you can rebuild the Entourage index that Spotlight references to quickly locate content.

Sync Services. From this setting group, you can establish synchronization of your Entourage contacts, events, tasks, or notes with the .Mac system, the Mac Address Book, and the iCal tool, as appropriate.

To Do List. These settings govern the default due date, reminder time, and reminder snooze time for new tasks.