SAP ABAP Class CL_WB2_SELECTION_AREA (Selection Area for Documents) is using

• Class (21)
• Data Element (3)
• Table/Structure Field (7)
• Interface (4)
• Message Class (1)
• Message Number (2)
• Class Method (11)
• Program (1)

#	Object Type	Object Name	Object Description	Note
1	Interface	IF_WB2_DOC	Any Document
2	Interface	IF_WB2_OBSERVER	Observer
3	Interface	IF_WB2_OBSERVER	Observer
4	Interface	IF_WB2_OBSERVER	Observer