The Amazon kindle publishing system that is! Whoop, whoop!
Need to take several long slow deep breaths now. Be calm, all is well. All will be well. Anyway there's still a chance to change it if it's wrong. I think.
Oh poops! Now I'm panicking.
But what could be wrong? I've checked, double-checked and millioniddle-checked. It'll be fine. Don't panic.
Keep calm and have a cup of tea.