Related Clues:

• "Oh, OK"
• Palmist's words
• What a nod might mean
• Discerner's phrase
• "... was blind, but now ___" ("Amazing Grace")
• ''Now it's clear!''
• 'Hmm ...'
• "So that's how it is!"
• Understanding comment
• ''Gotcha!''
• 'Yes, it's clear now'
• ''Hmm . . .''
• Phrase of acknowledgment
• 'Not if -- you first!'
• 'Understood,' slangily