The design of user-friendly maps requires user involvement. Users have to live with the screens and the system. Almost any concept that the user can define or convey to a programmer or analyst can be implemented. The best systems and their associated screens are developed through close co-ordination and co-operation between users and the system developers. The design of maps, which are a major source of input and output in a CICS system, therefore becomes very important.

Maps define formatted screens, which are user's input and output in an on-line environment. The map is the user's primary aid when conveying the input and output of a system. The map is used to send information and receive data from the user. Users will see some maps again and again during the course of the day. Therefore, it is in their best interest to make sure they understand the map and feel comfortable with its format. It is also a good idea to get suggestions and comments from the user and involve him/her in the design process. This communication between the user and the screen designer, before programming begins, will minimize the number of changes required after a program has been written.

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