Possible Clues:

• Service-conduct instruction
• So to polish the old police is enough to make them red
• Guiding rule when sampling grub - rice included
• Words put as a heading or direction as to how something must be done
• (Exam paper) heading
• Explanatory comment
• If you massage the boy, does it make him so red?
• Procedure rule (for exam, service)
• Heading on a document
• Statement of purpose