Jotik, Greg pointed out a defect, https://bugzilla.redhat.com/show_bug.cgi?id=1113320. Essentially the Book window toolbar key chooser is broken in BibleTime 2.10. The tree chooser that you can toggle on is work correct. I checked in a fix for this in master and stable-2.10. This may be worth a 2.10.1 release. Gary