Related Clues:

• Yes, that's Abcefg . . .
• Yes, that would make the Dodder odder
• That shows one is agreeable to Number Five Hundred
• Yes, that's the difference between 3 down and o'er
• Would 16 down be frozen with this? It seems, yes
• Yes, that's the way to make one of what's done
• Per this per drink, yes?
• The go-ahead sign
• Yes, put it on upside down
• Yes, that's ABCEFG
• ABCEFG? Yes
• Yes, there's five hundred missing
• 'ABCEFG? Yes, that's it (3)'
• Silently greet
• Silently indicate agreement