[1] [DFN[[CODE(char)[[[U+003F]]]]]] [DFN[[CODE(charname)@en[[[QUESTION MARK]]]]]] ([DFN[[CODE(char)[[[?]]]]]])
は、[DFN[[[疑問符]]]]です。

[2] [CITE@ja[日本語組版処理の要件(日本語版)]]
( ([[Japanese Layout Task Force]] 著, [TIME[2012-03-23 20:19:12 +09:00]] 版))
<http://www.w3.org/TR/jlreq/ja/#positioning_of_dividing_punctuation_marks>