Changing or Displaying the Data Definition for a Cluster Object 
Prerequisites
You have created an interface format.
You are in the
tree structure and all table objects are displayed with all field objects.Procedure
You access the Data Definition for DB <name>, Cluster <name> dialog box.
The dialog box also gives you an overview of the assignment of internal table names or field string names to the corresponding structures in the data dictionary.
Result
You have changed the name of your data definition include and you have displayed an overview of the assignments to cluster objects.