Legalization (or detail-placement) of globally placed standard cells. Legalization involves snapping the standard-cells to the rows in an overlap-free manner.
Trait for a legalizer that is able to put globally placed standard-cells into legal positions. A legal position must for instance be overlap free, snapped to a standard-cell row and rotated or flipped correctly such that the power rails and wells are properly oriented.
Find legal positions and move the cells to those.