Showing section markers in elevations is a nice way to improve communication in a drawing set. Here's the fastest way to do it in ARCHICAD.
For more information on this video, check out the accompanying blog post:
http://www.shoegnome.com/2016/06/24/s...
For more information about markers in general, check out this blog post:
http://blog.graphisoftus.com/archicad...