1ea Regina Rexx Interpreter (ver 3.1) Freeware The Regina Rexx Interpreter is a Rexx batch language interpreter for DOS. Rexx is suplementaly supported by JP Softwares 4DOS Command Line Interpretor. Rexx is a popular batch language used on many different computer operating systems, because the script files can be used cross-platform. It is much more powerful than the familiar DOS batch file language native to the Command.com and 4DOS Command Line Interpretors. . 0