-# Current stable mapgens:
-# v5, v6, v7 (except floatlands), singlenode.
-# 'stable' means the terrain shape in an existing world will not be changed
-# in the future. Note that biomes are defined by games and may still change.
-# type: enum values: v5, v6, v7, valleys, carpathian, fractal, flat, singlenode
+# Current mapgens in a highly unstable state:
+# - The optional floatlands of v7 (disabled by default).
+# type: enum values: v7, valleys, carpathian, v5, flat, fractal, singlenode, v6