You can use any language that uses the Roman (Latin) alphabet. You can display source files using any font, so source files written in languages that require only a font change can be displayed and used in HyperRESEARCH.

Other languages that use non-Roman alphabets - such as Chinese, Japanese, Arabic, Russian, and others - will require changes to the text engine used in HyperRESEARCH to fully support the Unicode standard. These changes are in active development now, and we look forward to fully supporting work in these languages in an upcoming version of the program.