As it was difficult to see openings on imported CAD drawings as the solid shearwalls in plan view obscured them, the drawing for the openings action when CAD drawing is showing has been modified to allow you to see openings. Segmented shearwalls are transparent with diagonal lines. Perforated walls have hatches and the non-shearwall is blank as before. If there is no CAD import showing, then shearwalls are shown in solid colour as before.