Canon EOS 60D Instruction Manual page 199

The number of images and movies for each rating will be counted up to 3
digits (999). If rated images reaches 1000 or higher, [###] will be displayed.
Taking advantage of ratings
With the [4 Image jump w/6] menu, you can display only the rated
images and movies.
With the [4 Slide show] menu, you can playback only the rated images
and movies.
With the provided software, you can select only the rated images and
movies.
With Windows Vista and Windows 7, you can check the rating with the
file information display or the provided image viewer.
3 Setting Ratings
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