Related Clues:

• Tip-off
• See 19-Across
• 'Warm' or 'cold'
• Traveler's reference
• 'You are here' posting
• Helpful information
• It works according to scale
• California's ___ Valley
• Blueprint
• Subtlety
• Act suggestively
• Whiff
• Avis offering
• Nudge
• Helpful ___