The folder is intended for collecting all kinds of HO car prototype parameter files for the addition of car parts and cars to the XTrackCAD car inventory. 

Your original drawings and artwork of filled boxes, lines, etc. grouped and added as structure to the Prototype parameter file will be a very helpful contribution for later editing and small changes (e.g. similar models of other manufacturers or scales). 

Please, feel free to contribute your work results here. Select meaningful filenames, include a brief description and give any instruction needed for making use of your contribution in a corresponding text file.

Thanks in advance, Jo