Related Clues:

• Red markers?
• Shelter for ships
• Letters to creditors?
• Papers promising payment
• They indicate shyness
• Alternatives to chips, say
• Debt slips
• Short notes?
• Promissory notes, so to speak
• Unsettled items
• Slips in some pots
• Gamblers memos
• Frowned-on pot additions
• Evidence of debts
• Debtor's chits