RPL/2 is the abbreviation for reverse Polish LISP/2, a hp-28s derived language from HP. It contains extensions (preprocessing, compilated libraries, new features), a Tex output, and the ability to draw graphics.
RPL/2 4.1.4 This version fixes multiple compile warning issues. BLAS, LAPACK, ncurses, SQLite, and Giac have been upgraded. UCASE, LCASE, POS, SIZE, CHR, NUM, and SUB can handle strings with special characters. Fixed a major error for int. CONFIGURE.AC has improved the removal of the operating system under special circumstances. Fixed a major error for DRWS (Sdat is not used). You can now write a list of unformatted files and integers, real numbers, and complex numbers. Rplawk Makefile has been repaired to avoid errors in the construction process.
Software Information: http://www.rpl2.net/
Download Address: http://www.rpl2.net/download/rpl-4.1.4.tar.bz2