An iPad weighs tremendously less than a technical manual and is therefore easier for the Soldier to maintain.

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The line, in the Penzing district of western Vienna, had been put under manual control following a technical defect, a spokeswoman for Austrian railways said.

BBC: Austrian trains in head-on crash

Although Microsoft has touted a 12, 000-page submission and free technical support to its rivals as the answer to the EC's ruling, the Commission says the hefty manual is still not usable.

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