Hello
I’m looking to create multi mods world?.
I saw the Core mods that can create world order.
/ world create
So one can have PLUSIEUR world? but how we tp in the world that can reate?
Can we create also create portals to move from one world to another?.
Core also contains the following command: /tpworld [player] <world>
If you need to find out the eXacT name of a world feel free to use: /world list
Spawns, Homes, Warps, … all support multiworlds. Portals are definitely planned and will be added as soon as region selection can be fully implemented! 
Thank you.
Can I import a world if so with what command?.
The command to create and to list the worlds does not work anymore and is no longer in the list table / help
Here are the version I used.
Core-2.4.0b
1.8-1515-2.1DEV-686
The following command does not work anymore.
/ world create
/ world remove
/ world list
/ world help
An idea ?