Is there a systemwide hotkey to highlight a single word in OS X?

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http://superuser.com – I've recently been wondering whether there is a systemwide hotkey for highlighting a single word in OS X. Having used Microsoft Windows before I got used to CTRL+W in Visual Studio and am now missing this functionality. Is there any way to make this work and if possible systemwide, e.g. on every NSTextField in any application? (HowTos)