What is the main purpose of Publication 348?

The main purpose of Publication 348 is to offer a guide on window services crime prevention. This publication focuses on informing postal employees about effective strategies and best practices to prevent crimes that could occur in window service operations. By providing guidelines specifically for this context, it aims to enhance the security of postal transactions and protect both employees and customers.

Other options do not accurately capture the essence of Publication 348. While safety protocols, job listings, and mailing rates are essential aspects of postal operations, they fall under different publications or materials that address those specific subjects. The intent of Publication 348 is precisely centered around crime prevention in window services, making it a crucial resource for maintaining safety in postal environments.