Quick Look is a fantastic bit of tech, letting you view any file up close and personal with a quick tap on the Spacebar. It works in the Finder, in Open and Save dialogs, and across a ton of other apps like iPhoto.
It’s basically the best new thing ever.
There are times, though, that I forget I’m previewing a file with Quick Look and I head up to the text in a document to copy and paste it elsewhere, only to be rebuffed. You just can’t do this.
Unless, of course, you enable this feature using Terminal.