Final answer:
SIR educates licensees, servers, and retailers on the regulations and supervisory measures related to the sale of securities, ensuring ethical practices and client protection.
Step-by-step explanation:
SIR, which stands for Seller of Instruction Requirements, educates licensees, servers and retailers on the important regulations and supervisory measures involved in the sale of securities. This includes ensuring that brokers, dealers, and bankers are well-versed in compliance issues, ethical sales practices, and proper interaction with clients. The goal of SIR training is to promote a secure and fair marketplace for financial investments, protecting both industry professionals and consumers.