This makes perfect sense to me. In particular, Read should be able to read .xol files and display books contained within them if they are in a known/readable format. Adding support over time for alternatives to catalog.atom would not be difficult (there are some learning-objects formats that have different canonical names and formats for their catalog files) but I'd like to see this become the recommended way to store a set of books, even if it is part of a more complex activity/object/content bundle. SJ <div class="gmail_quote"> On Wed, Jul 22, 2009 at 5:06 PM, Sayamindu Dasgupta <<a href="mailto:sayamindu@gmail.com" target="_blank">sayamindu@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hello, While looking at the existing Library Bundle mechanism, I was wondering if it would be possible to bypass the Browser altogether and launch the catalog inside Read itself (for library bundles that have ebooks in them). If we use a zip archive format, with the following internal layout, it will be possible to load the catalog directly into Read (once I have support for the draft OPDS standard in Read): . |-- books | |-- Verne - 20,000 Leagues Under the Sea.epub | |-- Verne - A Journey into the Interior of the Earth.epub | |-- Verne - Around the World in Eighty Days.epub | |-- Verne - From the Earth to the Moon.epub | `-- Verne - The Mysterious Island.epub `-- catalog.atom Only the catalog name needs to be constant (catalog.atom) - the books would be referenced from the catalog, along with optional thumbnail icons etc. This may be useful in scenarios where the deployment or a distributor wants to distribute multiple (but of a similar theme) books together (eg: beginning of the school session, books for a specific subject). Does this make sense ? Thanks, Sayamindu -- Sayamindu Dasgupta [<a href="http://sayamindu.randomink.org/ramblings" target="_blank">http://sayamindu.randomink.org/ramblings</a>] </blockquote></div>