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F1 - help
No installation required and it works off-line.
Language (English or Russian) is automatically selected.
The project uses the Nayuki library (MIT license):
https://www.nayuki.io/page/qr-code-generator-library
https://github.com/nayuki/QR-Code-generator
IDE: C++ Builder 10.3 Community Edition
https://github.com/LonchakovAleksey/SimpleQRCode