A string representation of the dictionary's last modification date in the international format (YYYY-MM-DD HH:MM:SS ±HHMM). If the same word appears across multiple dictionaries, the one from the dictionary with the most recent date will be used.
Available in Mac OS X v10.5 and later.
Declaration Syntax Version Information- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)