A Reverse Polish Notation calculator, with a compiler to convert TEXT files into RPN89 Programs. This updated version now has if..then..end, lbl, and goto statments for the compiler. It fixes a few bugs pertaining to calculations of very large and very small numbers. Also, it has more built in functions (ABS, ROUND, MOD ect.), and a way to change the exponential format.
http://www.ticalc.org/archives/files/fileinfo/260/26098.html