How do you use user function libraries (UFLs) to internationalize reports in Crystal Reports for Eclipse?
An article is available on the SAP Community Network which discusses and demonstrates the use of UFLs to Internationalize Reports.
(The link to that article can be found below in the references section.)
KBA , BI-RA-CR , Crystal Reports designer or Business View Manager , How To
SAP Crystal Reports XI ; SAP Crystal Reports XI R2