Canon EOS 100D Basic Instruction Manual page 365

The total number of images with a given rating that can be displayed is up to
999. If there are more than 999 images with a given rating, [###] will be
displayed for that rating.
Taking Advantage of Ratings
With [x2: Image jump w/6], you can display only images with a
specific ra ing.
With [x2: Slide show], you can play back only images with a specific
rating.
With Digital Photo Professional (provided software, p.366), you can
select only images with a specific rating (still photos only).
With Windows 7 or Windows Vista, etc., you can see each file's rating as
part of the file informa ion display or in the provided image viewer (still
photos only).
3 Setting Ratings
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