Elements of one or more database manipulation language commands strings are stored in tables, read from those tables and DML commands are generated. The error amplifier receives a reference voltage signal and a feedback voltage signal and outputs an error current signal according to the received feedback voltage signal and the reference voltage signal. Further, second current-carrying terminals of the motor and the motor are connected to each other by a front wheel roll damping line. The invention further relates to plant propagation material and to agricultural compositions comprising said compounds. At least a portion of the approximated RankBoost algorithm may be implemented as a single instruction multiple data streams architecture with multiple processing engines in the FPGA.