GRPN is a RPN calculator for the X Window system built using
the GIMP Toolkit (GTK).
GRPN works with real numbers, complex numbers, matrices, and
complex matrices. Numbers can be displayed in 4 different
radix modes, and complex numbers can be displayed in either
Cartesian or polar form.
GRPN is copyrighted under the terms of the GNU General Public
License. See the file LICENSE for more details.