replace show/hide links with icons add checked/unchecked checkbox and radio button fix bug with rotation in plane where green line stays displayed lock point where dragged constraint remove toolbar icons for sketch in 3d, add View -> Align to Workplane expose transformed point stuff in library, and email McNeel ----- rounding, as a special group associative entities from solid model, as a special group better level of detail some kind of import faster triangulation loop detection IGES export incremental regen of entities