This program is a modified version of the rpcalc program, a
Reverse Polish Notation (RPN) calculator.  It has been minimally modified
by Thomas B. Passin to run in a log frame tab in the Leo editor.  The license
remains the same as the original, which is reproduced here:

#****************************************************************************
# rpCalc, an RPN calculator
# Copyright (C) 2017, Douglas W. Bell
#
# This is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License, either Version 2 or any later
# version.  This program is distributed in the hope that it will be useful,
# but WITTHOUT ANY WARRANTY.  See the included LICENSE file for details.
#*****************************************************************************

The license for the modified code is:

#****************************************************************************
# rpCalc, an RPN calculator
# Copyright (C) 2017, Douglas W. Bell
# Modified for the Leo Editor by Thomas B. Passin
# Leo editor modifications Copyright (C) 2023, Thomas B. Passin.

# This is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License, either Version 2 or any later
# version.  This program is distributed in the hope that it will be useful,
# but WITTHOUT ANY WARRANTY.  See the included LICENSE file for details.
#*****************************************************************************
