Nobody has mastered this level yet, though a few are pushing into it. It's the active frontier.
Named ranges are an important improvement over VisiCalc. Once defined, a range can be invoked by name anywhere a range is expected. Assuming a cell range as a2..a7 has been assigned a name like january, @sum(january) is totally valid.
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「衝突與環境觀察站」的道格・韋爾（Doug Weir）指出：「德黑蘭的情況並不尋常，因為我們從未在如此人口密集的地方見過這類攻擊。」
'Humbled and thankful'