Related Clues:

• Summons from a teacher
• F note?
• Note there's a thousand heading march, not five hundred
• Item in an in-box
• It may start with "Re:"
• Exec's written message
• Reminder at work
• Note backed home-made clothes
• Note to the office staff
• Note below an F, maybe
• Supervisor's request
• Short note of a sort
• Message from a teacher
• Note in an office
• Curt summons from the boss