This utility will search through any *.trk or *.bin files and extract the filenames. If you enter a filename in the "LST filename" box, the program will create/append the filenames that are found into this file. This utility comes in very handy when creating trucks from scratch or just modifying an existing truck. If you enter the name of a *.trk file to search, it will search through this file and also any *.bin files associated with the *.trk file. In this way you can create your truck response file in one step. If you only want to extract data from *.bin files, that works just as well.