But we were locked in - upgrading to a new computer required upgrading to newer software
I had a feeling that, that would confuse the US readers.Yes, gas = Liquefied Petroleum Gas, Petrol = gasoline.
and also because virtually everybody working as a civil servant anywhere has got the microsoft fear (i mean, they think it's impossible to exist without having ms windows, and/or IE installed on every computer, they just can't understand any other possibility).