Meaning of SATT NAAM in MOOL MANTRA of Sikhism

I did couple of the posts on Sikhism previously. Sikh Holy Book starts with EKK-OUNG-KAAR to represent The Creator and the attributes of EKK-OUNG-KAAR follow to complete the MOOL MANTRA. In this post I will try to open up the meaning of SATT NAMM, two attributes which come next to EKK-OUNG-KAAR.