Relative accuracy sets the resolution of the model depending on the difference in size between the smallest and largest feature. Absolute accuracy sets the resolution at a number, for example 0.000 or 1 thousandth of whatever units you are using WG mm cm inches. Earlier versions of pro engineer could hold a complete buss assembly with each component at an accuracy of .02mm. later versions of Creo can no longer display such large models at such high resolution, DESPITE the massive increase in computing powe