Use The Trackpoint Pointing Device - Lenovo ThinkPad P16v Gen 1 Linux User Manual

Key / Key combination
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* for selected models

Use the TrackPoint pointing device

The TrackPoint pointing device enables you to perform all the functions of a traditional mouse, such as
pointing, clicking, and scrolling.
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ThinkPad P16v Gen 1 Linux User Guide
Function
Open Snipping Tool
Toggle keyboard backlight (for selected models)
Break operation
Pause operation
Scroll contents
Send system request
Enter sleep mode
To wake up the computer, press Fn or the power button.
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