added zeitschritt difference
added zeitschritt difference

Darnor/SeminarDGL,AndreasFMueller/SeminarDGL,crazycrank/SeminarDGL,El-Mono/SeminarDGL,crazycrank/SeminarDGL,Darnor/SeminarDGL,El-Mono/SeminarDGL,AndreasFMueller/SeminarDGL