Ideographic Symbols and Punctuation characters supported by the Serif.plain font

Character	Image
TANGUT ITERATION MARK (U+16FE0)
NUSHU ITERATION MARK (U+16FE1)
OLD CHINESE HOOK MARK (U+16FE2)
OLD CHINESE ITERATION MARK (U+16FE3)
KHITAN SMALL SCRIPT FILLER (U+16FE4)
VIETNAMESE ALTERNATE READING MARK CA (U+16FF0)
VIETNAMESE ALTERNATE READING MARK NHAY (U+16FF1)

Count: 7

Character

Count: 0