Related Clues:

• ''Now it's clear!''
• Discoverer's cry
• 'Hmm ...'
• Cry when the lights come on
• "So that's how it is!"
• Understanding comment
• ''Gotcha!''
• 'Yes, it's clear now'
• ''Hmm . . .''
• Phrase of acknowledgment
• 'Not if -- you first!'
• 'Makes sense'
• 'No argument here'
• 'No need to elaborate'
• Sound of a epiphany