What Is NBT?
NBT is the file format Minecraft uses to store most of its data. Region files, playerdata files, etc are all NBT files.
If you would like to make edits to these files you'll need to use an NBT editor. Our panel has a built in editor, but if you're looking for something a bit more advanced, you can download one here:https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/minecraft-tools/1262665-nbtexplorer-nbt-editor-for-windows-and-mac (opens in a new tab)
There are also ones you can use in game, here: https://www.curseforge.com/minecraft/mc-mods/nbt-editor/files (opens in a new tab)