Related Clues:

• Horse wearing pair of spectacles? That's a surprise!
• 'So that's the trick!'
• "Makes sense"
• "That's clear"
• Comprehending comment
• 'Who would've thunk it!'
• 'That's clear to me now'
• 'Amazing Grace' verse ender
• 'Ah, got it'
• 'Oh, now it's clear'
• Cry of apprehension
• Sort-of opposite of 16 Across
• 'What do we have here?'
• 'I see what you're doing!'
• 'I thought so!'