'''Diacritical marks''' are used in [[language]]s to distinguish between two [[sound]]s represented by the same [[letter]]. For example, a long A and a short A are both represented by the letter A, but one can be distinguished from the other by making Á denote the long A.
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'''Diacritical marks''' are used in [[language]]s to distinguish between two [[sound]]s represented by the same [[letter]], or to indicate [[stress]] or [[pitch|tone]]. For example, a long A and a short A are both represented by the letter A, but one can be distinguished from the other by making Á denote the long A.