SAP ABAP Class CL_O2_TAG_LIBRARY (Data Model Tag Library (Design Time)) is using

• Class (83)
• Data Element (29)
• Table/Structure Field (90)
• Function Module (3)
• Interface (3)
• Message Class (1)
• Message Number (2)
• Class Method (69)
• Table (33)

#	Object Type	Object Name	Object Description	Note
1	Interface	IF_MESSAGE	Interface for Accessing Texts from Message Objects
2	Interface	IF_WB_MANAGER	Interface for Workbench Manager
3	Interface	IF_WB_MANAGER	Interface for Workbench Manager