I suppose that another possible format is PostScript format, which has some of its own advantages and disadvantages. It has both text and binary format, and the

I suppose that another possible format is PostScript format, which has some of its own advantages and disadvantages. It has both text and binary format, and the binary object sequence format can easily be read by a C code (I wrote a set of macros to do so) without needing to parse the entire structure into memory at first; just read the element that you need, alone, one at a time, in any order. (I have used this format in some of my own software.) JSON also has its own advantages and disadvantages. Of course, both of these formats are more structured than CSV, but XML is also a more structured format. (And, like I and others have mentioned too, the format that they dsecribed isn't actually unique; it just doesn't seem to be that common, but there are enough people who had done the same thing independently, and a few programs which support it, that you could use it if you want to do, and it should work OK.)