When you have documents in chinese or japanese and you only have a handheld running english operation system, VBook will help you. VBook can handle double-byte charsets very well, supported charsets are GB2312, GBK ,BIG5 and Shift-JIS.
VBook supports standard palm document and pure text document (need expansion card). For best effect, I recommend you use BookMaker to make documents for VBook, VBook's documents have be optimized for speed access and a big compression ratio. If you convert document from html file, the link with in it will be reserved.