I have an old school customer who wrote his application back in the DOS days and hasn't upgraded his data storage methods since. He has some sort of "b-tree" files, as he explains, that he queries with some C++ code. I semi-remember these from college, but was curious if any of you know of some utilities out there so I can at least look at the files, and maybe export to a text file or something. Any chance? Are they even standardized?