"You can have a master copy of PC Cillin that makes sure all your copies are up to date just by clicking on one, " says Mr Craig from Trend Micro.

BBC: NEWS | Technology | Home PC face security onslaught

On Monday morning, the SDLP's Alban Maginness posed alongside other local elected representatives at the site with a giant copy of the new master-plan (a photographer captured the event but broadcasters weren't invited).

BBC: Girdwood barracks development: devil in the detail?

The master copy of the interview was lost in transit, but director Paul Sen had secretly kept a copy on VHS tape, Cringely said.

CNN: Mark Milian,

When all the finishing touches are complete, the master copy of the movie will reside not as a film negative but as a computer file, several terabytes in size (exactly how many terabytes, no one yet knows).

FORBES: Attack Of The Digital Movie