Related Clues:

• ''Gotcha!''
• 'Yes, it's clear now'
• ''Hmm . . .''
• Phrase of acknowledgment
• 'Not if -- you first!'
• Silent OK
• Silent agreement
• 'Makes sense'
• Head movement
• 'No argument here'
• 'No need to elaborate'
• Endorsement
• ''Makes sense to me''
• Crystal gazer's words
• Silent assent