Ability to limit area of generation or view

[Pookachu]

I think it would be a helpful feature to be able to set a limit for the world generation to only see chunks generated out to specific coordinates.

I'm trying to make a server with a specific set of datapacks with a world border 4096 blocks radius, and when I use the datapack map I can not easily see where the world would end for players, so it's hard for me to quickly determine whether or not it's a good map to use.

[jacobsjo]

You can enable a region grid using a button on the right. 4096 blocks would correspond to 4 grids. Would that be enough to judge where the world-border is?