Settings

Width & Height	The map size
Cell Size	The single cell size of the grid
Cluster Cell Size	Defines the cluster cell size. To optimize the map generation and reduce complete map rebuilds when changing the map, TWC puts tiles into larger clusters. Only clusters are being rebuilded instead of the complete map. These clusters are also merged into one single mesh when tile merging is enabled.
Merge Preview Texture	When enabled all preview textures from the blueprint layers are being merged one by one from top to bottom.
Use Global Random Seed	When enabled, a global random seed is being used for every layer, algorithms and modifiers.
Seed	The random seed.