bom_?.py are some python scripts which read a generic xml netlist from eeschema, and create a bom. All examples use kicad_netlist_reader.py, which is a python utility to read and parse this generic xml netlist and create the corresponding data used to build the bom. You can modify them to build the bom you want. to use them, you should install python, and run: python bom_example?.py See Eeschema doc, chapter 14 for info about the generic xml netlist format, and how to run a script from Eeschema to create a customized netlist or BOM. If the python comment """ @package some comments """ is added to the beginning of the python script, the comment will be displayed in Eescheam, in the BOM dialog For instance: """ @package Generate a HTML BOM list. Components are sorted and grouped by value Fields are (if exist) Ref, Quantity, Value, Part, Datasheet, Description, Vendor """ displays: Generate a HTML BOM list. Components are sorted and grouped by value Fields are (if exist) Ref, Quantity, Value, Part, Datasheet, Description, Vendor in BOM dialog