Originally Posted by dontpanic

From the knowledge base:

Some PDF files have the fonts embedded in them, and in this case all languages are supported. For PDFs and ePUBs where the enTourage eDGe has to provide the fonts, the following languages are supported:

Brazilian Portuguese
Chinese Simplified
Chinese Traditional
Dutch
English
French
German
Italian
Japanese
Korean
Portuguese
Spanish
More languages will be added with software updates in the future.