Does calibre support the switch/case feature in epub? I tried to create an epub that uses the feature, but it doesn't seem to work right when I view it in calibre. There are two cases, and it should only display one of them, but both are displayed. I can't tell whether I messed up creating the epub, or calibre just doesn't support the feature. This seems to be an EPUB 2 feature:
http://idpf.org/epub/20/spec/OPS_2.0...m#Section2.6.3