What is the purpose of the Look Up button on a Logitecth MX Keys Keyboard?

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Everything is in the title. I wonder if anyone knows how to use the Look Up button on a Logitech Mx Keys. I saw in Logitect Options that it does a look up but what does that mean exactly? Any idea? I'm talking about the button surrounded by red in this picture. enter image description here

1 Answers

In Mac OS, you can highlight a word and press the Look Up button to see the definition pop up in Chrome. I believe this is the same action as selecting a word, right clicking it, then pressing on the Look Up "...." option.

You can also press the fn key with the Look Up button to toggle scroll lock.

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