漢字構成記述文字 (Unicodeのブロック)
Ideographic Description Sequences
IDS := Ideographic | Radical | CJK_Stroke | Private Use | U+FF1F | IDS_BinaryOperator IDS IDS | IDS_TrinaryOperator IDS IDS IDS CJK_Stroke := U+31C0 | U+31C1 | ... | U+31E3 IDS_BinaryOperator := U+2FF0 | U+2FF1 | U+2FF4 | U+2FF5 | U+2FF6 | U+2FF7 | U+2FF8 | U+2FF9 | U+2FFA | U+2FFB IDS_TrinaryOperator:= U+2FF2 | U+2FF3