Free42 2.5.11

Free42 is a re-implementation of the HP-42S calculator and the HP-82240 printer.
It is a complete rewrite, not using any HP code, and it does not require an HP-42S ROM image.
Free42 is an Open Source project. The executables and source code are released under the terms of the GNU General Public License, version 2.
All third-party code used in Free42 is either in the public domain, or licensed under terms compatible with GPLv2, or used with the authors' permission.

During number entry, if you backspaced over a negative number until only the minus sign remained, that minus would not be parsed correctly, and you could get . For example, 1 +/- <- ENTER.
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