Align Floors
Align Floors to 1) Toposurface that aligns selected floor to the shape of the toposurface, 2) Edge that aligns selected floor to the edge of another element, 3) Face that sligns selected floor to a picked face of another element, 4) Element Top that aligns selected floor to the top of another element, 5) Element Bottom that aligns selected floor to the bottom of another element, and 6) Lines that aligns selected floor to model/detail lines.