Quiz Improvements Ask Follow-Up Questions: When you get a quiz question wrong, you can now ask follow-up questions to better understand the concept. A chat interface appears below the explanation, letting you dig deeper into why you got it wrong. Preview Before Starting: Quizzes generated from concept exploration now show a preview screen where you can see the questions, save the quiz for later, or start immediately. Better Quiz Organization: Concept quizzes now properly associate with their source page, so you can find them in the Quiz tab for that page. Exploration Flow Seamless Navigation: When exploring a concept from the Concepts sheet, returning from exploration now automatically reopens the Concepts sheet — no need to tap the button again. UI Polish Improved Icons: The explore button now uses a compass icon that works well in both light and dark mode. Consistent Buttons: Floating action buttons in the PDF reader now have consistent sizing and styling. Cleaner Exploration Tree: The exploration path visualization now uses simple connecting lines instead of bullet points for a cleaner look.