Hi The changes to read Scott Crosby's binary format are complete (for mkgmap itself) and I will merge them back soon. Before that it would be good for as many people as possible to try it out on their existing XML files, with the options that they normally use, since the code has been completely restructured. I've run a number of test that show that the results exactly the same between the new and current trunk version of mkgmap. I'm not so worried about testing the binary input, since it is new and won't affect anyone if there are bugs. It won't be that useful until splitter is able to output the format directly anyway. The amount of code required for the new format was very small once the existing code was restructured though and seem to work very well. The found actual time to read the file was cut in about half, however the time to read the input file is now a small percentage of the total run time of mkgmap, so the overall speed increase is small. The main benefit will be with the splitter and the disk space requirements. ..Steve