21.   Its most useful feature seems to be a few pages that your child can color in should he or she get bored with the program.

22.   Mayo offers color pictures of pills and capsules to help you identify them, a useful feature.

23.   Nisus also has a few useful features not yet included in Word.

24.   Now the weasels exploit the most useful features of popular e-mail programs to deliver their payloads.

25.   One particularly useful feature is Chat Guard.

26.   One useful feature of the Gomez site is a bulletin board where customers sound off about their banks.

27.   One useful feature is a calculator that will figure out the amount of paint you need after you put in room dimensions.

28.   Other useful features are flip-up counter extensions on two sides that allow plenty of work surface away from the fires.

29.   Placement of the controls leaves no grounds for complaint, and the redundant stereo switches on the steering wheel are a useful feature.

30.   Scanning is a useful feature for home-office users.