That is kind of odd. But to get this prompt, you need to click on the printer icon to see the 'print' version of the article. And then they tell you: You prin

That is kind of odd. But to get this prompt, you need to click on the printer icon to see the 'print' version of the article. And then they tell you: You print copies on the honour system; we trust that you will only make up to 5. I've never seen this before, but it's not a bad way to do it. And if you need an ad-free version, it's nice to know that you can get one easily.