By the proper officer; by virtue of the proper authority; in pursuance of the special powers vested in an officer or office; as, accounts or reports officially vertified or rendered; letters officially communicated; persons officially notified.
In a peer network, no one is officially in charge. It doesn't have a command hierarchy. It doesn't have a boss. So, all the decisions are somehow made collectively. The control of the system is in the hands of everyone who is a part of it. Steven Johnson
From 1971 onwards, the Memorial Day holiday was officially observed on the last Monday in May and became the unofficial start of the summer, with barbecues, blockbuster movie openings and mattress sales. Allen West