Del$(Test$,n1,n2)' deletes n2 characters ex n1 (How the original vorgesehen is)
Del$(Test$,-n1,n2)' deletes n2 characters (direction Stringende) ex n1 of hinten calculated
Del$(Test$,n1,-n2)' deletes n2 characters (direction Stringanfang) ex n1 of in front
Del$(Test$,-n1,-n2)' deletes n2 characters (direction Stringanfang) ex n1 of hinten