From R/3 Release 3.0, the command set of the ABAP interpreter has been enhanced to include key words that allow the application programmer to process external objects. OLE2 was supported as the first object model.
ABAP keywords allow you to control all applications with functionality in the form of an OLE2 Automation Server from an ABAP program:
Examples of such applications are the Microsoft products EXCEL or WinWord.

For further information about OLE2, refer to OLE2 in the online help (ABAP Editor).