Related Clues:

• Letters on a note
• Promise of a sort
• Letters on a chit
• It might be called in
• Indent key
• Promises of payment: Abbr.
• Paper in a pot, maybe
• Something owed
• Letters denoting debt
• Promise to repay
• Creditor's stack
• Actor Hunter
• Informal debt instrument
• Short notice?
• Diner's bill