P&K KFA (VDI 3781 part 4)
The CoreNames (defined in the CityGML file) can be used to extract parts from a larger CityGML file into a new file. The extract can possibly serve to simplify the examination of the data. The CoreNames can easily be found by importing a CityGML file and editing them in the graphical user interface. After the import, the CoreNames are located in the comment of the buildings. These can be copied in this form using the "Retrive Names" button. By pressing the File button you can enter the input file. The output file is then written out next to the input file with its name and the ending -extract.gml.
Note: The expert mode can be activated under Preferences.