In 2D CAD you get linetypes. These are often used to represent items that are not visible in a bird’s eye view (things above or below a floor, for example). SU doesn’t have that facility because, in general, you model everything and then decide what to show or not in a given scene. However, that is still a limitation when showing traditional plans and want to indicate the presence of things like beams at ceiling level or drain runs below ground.
You can use broken lines in LO but it is very messy to have model-based geometry both in SU and LO. I was just wondering whether anyone had come up with a good solution to showing things like this in a plan scene?