Final answer:
Prescription paper must include a serial number as a security feature to prevent fraud, making every prescription uniquely identifiable and aiding in tracking.
Step-by-step explanation:
True. Prescription paper used for written (or printed) prescriptions typically must include several security features to prevent fraud and misuse of prescription medications. One such feature is the inclusion of a serial number, which allows each prescription to be uniquely identified and tracked. This is critical in maintaining the integrity of the prescription system and in combating the illegal diversion of medications. The serial number plays a crucial role in the verification and monitoring process, making it difficult for counterfeit prescriptions to be passed off as legitimate.