“Arguing for ‘separation of content from presentation’ implies a neat division between the two. The reality, of course, is that content and form, structure and style, can never be fully separated. Anyone who’s ever written a document and played around to see the impact of different fonts, heading weights, and whitespace on the way the writing flows knows this is true. Anyone who’s ever squinted at HTML code, trying to parse text from tags, knows it too.”
Including the notion that form (a.k.a. presentation) has meaning too.