1.1a1: added CHANGELOG.txt math: added abs, int modes: added auto, fix, sci, eng, mode control: added run, ?, quoted strings cmdline: added support for filenames at cmdline internal: abstracted stack access, mode access; added process_line, run_file 1.0b3: second public version features: Quit and No-op: q _ Stack Operations r c d p f n Mode Operations k K deg rad Register Operations sX lX Arithmetic and Algebra + - * / % ^ v ! rec neg Trigonometry and Exponents sin cos tan asin acos atan pi e exp ln log Complex Value Conversion pol rect