Comma diminutive , is the name of a graphic sign similar to the apostrophe (in fact, on some keyboards it is usually the same) and is used to wrap statements. As they come in pairs (one opening and one closing) they are usually referred to in plural as quotation marks, although for some fonts the same layout is used in both ( compare ' ' or ) . In addition to this single quotation mark version there is also double quotation mark (or English quotation marks " " ) and double angular quotation marks (or Spanish quotation marks « ) .