Hi,I've never heard of an HML file either. HTML yes, and XML, but not HML. If you want to transfer a book from Bookshare, you need either the braille file (BRF) or the OPF file (one of the files in the DAISY version). When you use Book Port Transfer and find a Bookshare book, only the correct file displays, making it easy to transfer the right one.
Cheers, Anna