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Debian and Ubuntu .deb, ARM64: cold-open_0.1.0-alpha.3_arm64.deb, 7.2 MB.
If it doesn't start in a moment, download it here.
Next: install it
- Install it:
sudo apt install ./cold-open_*.deb - Cold Open is in your applications menu.
The full steps are in Install, with how to check the file against its checksum.