Don’t worry, I wouldn’t do things like this in JSON. Nevertheless, it can be very useful to have comments along with configuration values, for example to explain the actual values (not their purpose) and why they were chosen. That’s information you can’t add to the code which processes the values.
A lot of good answers but I would add one note:
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How do you comment multiple properties separately?
deleted by creator
Don’t worry, I wouldn’t do things like this in JSON. Nevertheless, it can be very useful to have comments along with configuration values, for example to explain the actual values (not their purpose) and why they were chosen. That’s information you can’t add to the code which processes the values.