When you input telephone numbers into a contact record, Microsoft Entourage will not automatically format the number even though you have selected that option in Preferences, unless you enter exactly seven or ten digits with no other characters.

This is deliberate, to allow the entry of numbers in formats other than your default format, such as numbers for other countries. It is annoying, however, because telephone numbers that are copied from mail messages or even simply mistyped the first time they are entered cannot be reformatted, except manually. This script meets the need for automated reformatting on demand.