The action of explaining the meaning of something.

"Who decides on what the painting is about, is it the curator or the painter? Or the person who wishes they were painting it, you know? And actually, the person who is viewing it may have their own opinion on it. I mean, I do have quite strong opinions about the art world generally, it has a tendency to be pretentious quite often, and lose people who don’t understand that language or who are just put off. And I understand where they’re coming from because art makes itself inaccessible to some people by the way it describes itself really."