Ideographic variation indicator, a visible marker placed before a Chinese character to show the next ideograph is a variant of the intended one.
U+303DPART ALTERNATION MARKU+303FIDEOGRAPHIC HALF FILL SPACEU+303CMASU MARKU+303BVERTICAL IDEOGRAPHIC ITERATION MARKU+303AHANGZHOU NUMERAL THIRTYU+3039HANGZHOU NUMERAL TWENTYU+3038HANGZHOU NUMERAL TENU+3037IDEOGRAPHIC TELEGRAPH LINE FEED SEPARATOR SYMBOLU+3036CIRCLED POSTAL MARKU+3035VERTICAL KANA REPEAT MARK LOWER HALFU+3034VERTICAL KANA REPEAT WITH VOICED SOUND MARK UPPER HALFU+3033VERTICAL KANA REPEAT MARK UPPER HALF64 characters in the CJK Symbols and Punctuation Unicode block.
U+3000IDEOGRAPHIC SPACEU+3001IDEOGRAPHIC COMMAU+3002IDEOGRAPHIC FULL STOPU+3003DITTO MARKU+3004JAPANESE INDUSTRIAL STANDARD SYMBOLU+3005IDEOGRAPHIC ITERATION MARKU+3006IDEOGRAPHIC CLOSING MARKU+3007IDEOGRAPHIC NUMBER ZEROU+3008LEFT ANGLE BRACKETU+3009RIGHT ANGLE BRACKETU+300ALEFT DOUBLE ANGLE BRACKETU+300BRIGHT DOUBLE ANGLE BRACKETU+300CLEFT CORNER BRACKETU+300DRIGHT CORNER BRACKETU+300ELEFT WHITE CORNER BRACKETU+300FRIGHT WHITE CORNER BRACKETU+3010LEFT BLACK LENTICULAR BRACKETU+3011RIGHT BLACK LENTICULAR BRACKETU+3012POSTAL MARKU+3013GETA MARKU+3014LEFT TORTOISE SHELL BRACKETU+3015RIGHT TORTOISE SHELL BRACKETU+3016LEFT WHITE LENTICULAR BRACKETU+3017RIGHT WHITE LENTICULAR BRACKETU+3018LEFT WHITE TORTOISE SHELL BRACKETU+3019RIGHT WHITE TORTOISE SHELL BRACKETU+301ALEFT WHITE SQUARE BRACKETU+301BRIGHT WHITE SQUARE BRACKETU+301CWAVE DASHU+301DREVERSED DOUBLE PRIME QUOTATION MARKU+301EDOUBLE PRIME QUOTATION MARKU+301FLOW DOUBLE PRIME QUOTATION MARKU+3020POSTAL MARK FACEU+3021HANGZHOU NUMERAL ONEU+3022HANGZHOU NUMERAL TWOU+3023HANGZHOU NUMERAL THREEU+3024HANGZHOU NUMERAL FOURU+3025HANGZHOU NUMERAL FIVEU+3026HANGZHOU NUMERAL SIXU+3027HANGZHOU NUMERAL SEVENU+3028HANGZHOU NUMERAL EIGHTU+3029HANGZHOU NUMERAL NINEU+302AIDEOGRAPHIC LEVEL TONE MARKU+302BIDEOGRAPHIC RISING TONE MARKU+302CIDEOGRAPHIC DEPARTING TONE MARKU+302DIDEOGRAPHIC ENTERING TONE MARKU+302EHANGUL SINGLE DOT TONE MARKU+302FHANGUL DOUBLE DOT TONE MARKU+3030WAVY DASHU+3031VERTICAL KANA REPEAT MARKU+3032VERTICAL KANA REPEAT WITH VOICED SOUND MARKU+3033VERTICAL KANA REPEAT MARK UPPER HALFU+3034VERTICAL KANA REPEAT WITH VOICED SOUND MARK UPPER HALFU+3035VERTICAL KANA REPEAT MARK LOWER HALFU+3036CIRCLED POSTAL MARKU+3037IDEOGRAPHIC TELEGRAPH LINE FEED SEPARATOR SYMBOLU+3038HANGZHOU NUMERAL TENU+3039HANGZHOU NUMERAL TWENTYU+303AHANGZHOU NUMERAL THIRTYU+303BVERTICAL IDEOGRAPHIC ITERATION MARKU+303CMASU MARKU+303DPART ALTERNATION MARKU+303EIDEOGRAPHIC VARIATION INDICATORU+303FIDEOGRAPHIC HALF FILL SPACE