Which function is used in AS400 to manage comp shop maintenance?

The function used in AS400 to manage comp shop maintenance is CSM. This stands for Comp Shop Maintenance, which specifically provides tools and functionalities tailored for maintaining and managing comp shop-related data and processes. Effective management through CSM allows for streamlined operations within the comp shop, enabling personnel to track inventory, manage supply levels, and ensure efficient use of resources.

In contrast, the other options serve different purposes. CLS often relates to closing or clearing systems or processes, EPL typically pertains to electronic program listings or logic, and DSL might refer to domain-specific languages or services, which do not specifically relate to comp shop maintenance functions. Therefore, CSM is the correct answer as it directly addresses the management of tasks pertinent to comp shop operations within the AS400 system.