Nick Thanks for the link. I had searched the web numerous times and only found user documentation. I'll see what I can make of this. I did manage to compile/run PCBNew and move it into my development platform, which was my objective. I have very little knowledge of c++ (I am an old guy and a hardware guy and most of my development has been low level). Nonetheless I would like to volunteer to port my PCB renumbering code into KiCad. I had a look at PCBNew and I am pretty sure it would be something I can do in collaboration with the development team as it is a feature which is missing from Kicad and I've written the most challenging aspect of the code. The major work that is left would be to provide a UI (which I believe I can derive from the existing code) and replace code I wrote from scratch for thing like creating the schematic hierarchy with existing Kicad code. I have never used IRC so I don't know how to proceed (when I said old, I meant old - plus there was a 30 year gap in my tech career). Thanks Brian -----Original Message----- From: