In AC12: Draw a straight polyline (two clicks). Set the line to have an arrowhead on each end. Check that an infilled arrow type is selected. You should see a line with a double arrow on one side and a single arrow on the other. Add a new segment to the polyline and it goes away. Nifty goof.
Ben Hruska
ArchiCAD 3.1 - 24
iMac
