Here you can enter a name for the object.
MIP and SAT mapping only approximate the optimum computation, since a precise computation would increase the render time greatly. SAT mapping is more accurate than MIP mapping. But sometimes these approximations can make a texture too blurred or too sharp.
So the Blur Offset and Blur Scale you to blur or sharpen the mapping. Blur Offset softens a texture.
Blur Scale fine-tunes the strength of the MIP or SAT mapping. A positive value increases the blur; a negative value weakens it. A strong value blurs detail but helps prevent flickering during animation. A weaker value brings out more detail but, increases the risk of flickering.