@Cecile I think in the original post (Script not parsing valid JSON), the user tried using the </> button, as the
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indicates. Kevin simply did not get what he was expecting out of the button. To some, it is counter-intuitive to insert the content, select it and then click on the button. Many users would expect an opening marker and a closing marker with the cursor set in between, waiting for their input. In that sense, I guess it does require some form of training.