New enhancements (user exits) for capacity leveling

Description

In Release 4.0A the following user exits are available:

You can use this enhancement to fix time periods that are automatically fixed on both planning tables when you call them up. You cannot change planning in the locked time periods.
You can use this enhancement to fill text fields in the table sections of the planning tables with any user-specific data. In Customizing for capacity leveling there is a structure USER in the layout key whose fields are empty when provided by SAP.
You can use this enhancement to change or enhance the text displayed for a graphical object or in the status line in the capacity planning table. The enhancement contains the function exit EXIT_SAPLPLAT_001.