Listing global coordinates of walls?

[Karl Wir_n]

Hi!
Is there a way to list the coordinates of the insertion points of walls? In the GDL Reference guide (pg.339, section Wall parameters - available for Doors/Windows, listing and labels) I find a global parameter called WALL_POSITION (absolute coordinates of the wall
array with 3 columns: x, y, z, which means the position of the wall’s starting point relative to the project origin). This is exactly what I would like to have in a text file, for all walls in my project.
However I can't find this as an option when setting up a list. Has anyone out there got a clue how to get the information i want out of Archicad?
Karl W