Using User Function Libraries (UFLs) to Internationalize Reports
Crystal Reports for Eclipse lets developers create User Function Libraries (UFLs) that are recognized by the Formula Editor. A UFL is a library of functions that is created by a developer to address a specific need. Crystal Reports lets you extend the formula language with your own Java functions, and then package them in a User Function Library. To demonstrate how to use the User Function Library wizard within Eclipse this documents shows how to build a UFL which will allow report designers to externalize static strings within a report.