Japanese one has support for XMDF (with and without DRM), EPUB, PDF, LRF, and TXT (no DRM). UI languages are Japanese and English. Has E-E and E-J dictionaries.
International firmware supports EPUB, PDF (DRM and no DRM), LRF, RTF, TXT (no DRM). Seven UI languages, 12 dictionaries.
I think that about covers it.
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