Hi Lars,
thanks for your reply. Hmm … maybe not officially documented by SAP, but we (the clients, partners or consultants) have brains as well 
Good to know that it is the same procedure on HANA as well.
For all the guys out there who are interested into encoding that data - please check the attached PDF document published by Dr. Thimo Bastuck and Claudia Hüffer. Unfortunately it is written in german, but i think you get the encoding procedure from it very well, even if you don't understand german.
Regards
Stefan
P.S.: You need to rename the attached document into *.pdf again, because of the "Attach Files" function on SCN does not allow PDFs 
