Show Property Data in Labels and Markers
As needed, set up Labels to display any element properties (generally the Property Label or the Classification and Properties Label):

Show Property Data in Zone Stamps and Door-Window Markers
Zone Stamps and Door-Window Markers are GDL objects. They can be scripted to display ARCHICAD element properties.
See the GDL Reference Guide for more information.
Watch the Video:
Element Classifications: Labels, Window and Door Stamps, Zone Stamp Enhancements