Hi Nancy: It sounds like what you're calling the BP file is really, in fact, the OPF file. I have seen this happen before, once the file has been transferred. If you look at the file before transferring it to the book Port from the computer side, I think you'll see the OPF extension. Anyway, if you're able to read it okay, then I wouldn't worry too much about the technicalities. The Book Wizard Reader looks in the XML file and gets the information. Pamela Rader, TECHNICAL SUPPORT American Printing House For The Blind 1839 Frankfort Ave. Louisville, KY 40206 PHONE: 1-800-223-1839, Ext. 307 >>> girlyscream@xxxxxxxxxxx 08/23/07 11:13AM >>> I used to get an opf file with book share. Now I only get the bp, hml, nxt and sml files. Any idea where the opf file went? As an experiment, I took the bp file away from the hml file...to a totally different folder. I hit enter on the bp file and the book said it was opening and then it began reading the book. How can such a small file do this? Or, has the bp file taken over the opf file somehow? I am just trying to understand. Thanks, Nancy ----- Original Message ----- From: "PAMELA RADER" <PRADER@xxxxxxx> To: <bookport@xxxxxxxxxxxxx> Sent: Thursday, August 23, 2007 8:37 AM Subject: [bookport] Re: file extensions > Hi: > > These are files created by the Transfer program. The IX file has to do > with navigation and the AA file has to do with holding your place in a > file. > > In the case of Book Share books, if it's a Daisy file, you would send the > OPF file. Daisy files are made up of multiple files. Even though you're > only sending one file, it gets the information from the other files that > make up the book. > > > > Pamela Rader, TECHNICAL SUPPORT > American Printing House For The Blind > 1839 Frankfort Ave. > Louisville, KY 40206 > > PHONE: 1-800-223-1839, Ext. 307 > > >>>> girlyscream@xxxxxxxxxxx 08/23/07 05:59AM >>> > What is the purpose of the ix and aa file types on the hidden files? > > Also, when transferring the .bp file from vookshare to the book port, how > can such a small file contain the entire book? > > Thanks, > Nancy > >