I created a change zoom by block for the world map librarie. you can access it here.
I see your name is in ig-pay ait-lay, so
Elcome-way to NAP!-Say.
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Tranlastion: Welcome to SNAP!, @ego-lay_atman-bay Very nice, but I don't think it needs to be added to the libraries becuase a person can make it easily.
*atin-lay
I think the underlying map software handles only integer values for zoom. It's not just your block.