Signature
#define UTF8C_MARK_NON_SPACING 0x00000020 // Non-spacing mark code points, Mn in the Unicode database.#define UTF8C_MARK_SPACING 0x00000040 // Spacing mark code points, Mc in the Unicode database.#define UTF8C_MARK_ENCLOSING 0x00000080 // Enclosing mark code points, Me in the Unicode database.