Transcription: This method of referencing external entities works real well provided you're referencing an XML document, one that contains XML markup or basically some text that isn't going to conflict with the XML processor. But what if you want to reference files that aren't XML markup? Perhaps some binary file like an image file that would just send the XML processor screaming down the hall because it doesn't understand what's going on. Well, that's when we would use an attribute entity.
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