I finally cracked open the book on Qt and put together a little demo app, so hopefully i'll be in a position to work on katana soon.

I've been using my N900 for all my reference needs in church for a few weeks now and it has given me some ideas on features that would be really useful.

Something i'd really like to see is support for several quick bookmarks. These could be implemented following the "ribbon marker" paradigm such as exists in some editions of scriptures now. It could show a few blocks of colored pixels at the top that could be "flipped down" to quickly bookmark a passage. Then the ribbon would also show up at the bottom. It could be "flipped up" to return to the passage. This would be very useful during e.g. Sunday school lessons with multiple passages being used in parallel.

I have been looking through the Sword mailing list trying to figure out what kind of support the engine has for annotations and highlighting of passages--without much success. Apparently one app that uses Sword implements a user commentary as a genbook, with each new comment being appended and using an index to reference it, but that doesn't seem to be very robust or sophisticated. Does anyone know more about this? I'd really like to be able to annotate and mark verses, and export that to other Sword apps.

Edit: i had originally thought such a thing could be implemented as a commentary module much like the pre-built commentaries, but i suspect on-the-fly commentary module manipulation that way doesn't work. Then again, i haven't found much documentation and as such am rather unsure how the engine works in many regards.