Use them just like normal tools, but you don't have to find shovel in your inventory to mine dirt when mining underground.
There are currently 4 multitools:
You can craft them using sword, pickaxe, axe and shovel.
Something like this (shape doesn't matter):
I also added some other features (both are disabled by default):
- Glass World. Enable and disable by setting gamerule glassDimensionEnabled to true or false.
- Legacy gamemode command. Enable and disable by setting gamerule lgamemodeEnabled to true or false.
Allows to change your gamemode like in older versions (/lgamemode)
Video showcase soonTM