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xinput_calibrator(1) on Linux

The text ef4501befb91, as Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.

A generic touchscreen calibration program for X.Org

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xinput_calibrator(1) on Linux now