This can be one or more of the following values. Candidates are in a style other than the ones in the following list. Candidates are in the same reading.
Candidates are in a code range.
Candidates are in the same meaning. Candidates use the same radical character. Candidates are in the same number of strokes. This varies as the user presses the PAGE UP and PAGE DOWN keys. If this number is zero, an application can define a proper value by itself.