The document discusses the referral system in healthcare. The referral system allows patients to be transferred from one healthcare facility to another when the initial facility lacks resources to properly treat the patient. This may occur due to a lack of drugs, equipment, or staff skills. The purposes of the referral system are to seek expert opinion, additional services, admission, or diagnostic/therapeutic tools. A referral involves completing a referral slip that provides key details about the patient and reason for transfer. The system helps ensure patients receive care beyond a facility's capabilities through connections with other healthcare centers.