The purpose of this tab is to modify the WORKING STORAGE and/or LINKAGE sections, supplementing the descriptions obtained automatically. It will complement the DATA DIVISION in the generated code.
The 'CD Lines' tab of the Pac Program entity defines resources that are external to the program (file, databases, etc.), whereas the '-W Lines' tab groups the work and link areas.
This way, they can be organized easily. If you call a Data Structure in the '-W Lines' tab, you cannot specify all the information (such as file matching, generation information...) you can specify in the 'CD Lines' tab.