Plugin Page: https://www.spigotmc.org/resources/voxelsniper.76791/
Voxel is a useful tool for creating terrain and lines, though most of it works, there is one big part of it that doesn't; the undo command. I usually mess up a tiny bit when making terrain but if I undo it, it would be fixed. However the /u command is broken (Internal Error) and I have to manually repair damage did from Voxel.
I hope it can be updated or fixed soon as this has been annoying me ever since I installed Voxel a couple of months back.