This is a simple mod that tries to help understand the mechanism that the void map dropping rules follow, adding a little box with oodles of information in it, and links to a webpage giving about as complete a rundown as exists.
Intended use is merely to have installed GodNooNoo's ModLoader. (assuming this mod gets added to the loader)
However, manual installation should be possible through one of the following paths:
Create a new Tampermonkey script with the contents of this repository's VoidMapClarifier.user.js file.
Download this repository's mods.js file, and place it in the /mods/ folder inside the Trimps folder.
More in-depth instructions can be found at the ModLoader's page, if you need them.