ARCHICAD users often need to place texts containing numbers incrementally increasing with placement, e.g. steps of stairs, parking places, etc.
With some basic GDL programming knowledge you can create a simple object that contains this text.
In the 2D script you have to include these lines:
hotspot2 0,0,unID : unID=unID+1
When the user places this object multiple times one-by-one, the value displayed by the object will get higher and higher with the placement as the ID of the object is getting a higher value.