In case if people want to go for example go to a custom map that isn't a skylands map.

Example Config:

worlds:
-----default:
----------persistInventory: false
-----dream:
----------environment: normal/nether/skylands
----------mobChance: 0
----------flaming: false...
----------returnToBed: false
-----nightmare:
----------environment: normal/nether/skylands
----------mobChance: 0
----------flaming: true...