Dr. Horst Keller has worked at SAP AG for many years. His experience includes managing the documentation and roll-out relating to ABAP and ABAP Objects.

Wolf Hagen Thümmel is a member of the TD Core AS&DM ABAP group and focuses on language-related tools in the ABAP environment as well as in the area of mass checks for quality assurance. He assumes responsibility for ABAP checkpoint statements and the related tools, memory analyses, and parts of the ABAP Debugger. Wolf Hagen Thümmel also deals with topics regarding the complexity of ABAP programs.