Software localization refers to the process of converting and customizing software products according to use habits and language of end users. It includes text translation, multiple-byte character set support, user interface re-design and adjustment, localization function enhancement and adjustment, engineering test and desktop publishing (DTP). Software localization covers the following processes: localization of user interface and help system, re-design and adjustment of user interface, source code supporting double-byte, index localization, enhancement and adjustment and program functions, translation and adjustment of program language and user manual, graph and desktop publishing, term definition and project management and so on.