CycloneIII FPGA pins

Hi,

I want to know what are these used for and how to generate them in the pin planner.

termination_blk0~_rup_pad Unknown PIN_AA17 4 B4_N1

termination_blk0~_rdn_pad Unknown PIN_AB17 4 B4_N1

termination_blk1~_rup_pad Unknown PIN_F19 7 B7_N0

termination_blk1~_rdn_pad Unknown PIN_E19 7 B7_N0

termination_blk2~_rup_pad Unknown PIN_U7 2 B2_N1

termination_blk2~_rdn_pad Unknown PIN_U8 2 B2_N1

termination_blk3~_rup_pad Unknown PIN_AA22 5 B5_N2

termination_blk3~_rdn_pad Unknown PIN_AB23 5 B5_N2