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Topic: How to display a margin ? (Read 532 times) previous topic - next topic

Celiasty

Hello,
I don't know if this topic has already been created but I haven't twisted it on Google.
I would like to be able to display a margin that would include numbers and also a small icon to display or remove from the code.
Here is a small example :

I would therefore like to know how to display the numbers and also how to retract part of the code in order to improve visibility

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