It is used to compensate for devaitions caused by the laser spot. It prevents excessive burning in image engraving situations. In the case of cutting, it guarantees more precise dimensions.
Excessive burning in image engraving and dimensional deviation in cutting caused by the laser dot offset have long been a headache for many. But now, with the parameter of the Dot Width Compensation available to configure, your machine is now able to optimize the toolpath based upon the size of the laser dot to reduce contour deformation and blurs.
Under Toolpath Settings > Optimization > Dot Width Compensation, input a value.