1D-Ydssy Jeunesse was a kids block by 1d-yssy in 1998, the same year the 1d-yssy channel got created. 1d-yssy was owned by SCE Networks (the company that owns ERWAN1). it got owned by IndexMedia in 2003, discontinuing the children's block. 1d-dssy is however still owned by SCE Networks, the reason why it is called "!D-YDSSY" is to make it pronounced "Un, Did See!".
