GenLayerIsland:
    This is the base layer used by vanilla for the Overworld chain. It pseudo-randomly places ocean and plains on an approximately 9-1 ratio.
    
    Constructor:
        Arguments:
            long
        Argument Usage:
            layer base seed



GenLayerFuzzyZoom:
    Zooms the parent layer, effectively increasing its size. This version is more random than GenLayerZoom
    
    Constructor:
        Arguments:
            long, GenLayer
        Argument Usage:
            layer base seed, parent layer



GenLayerAddIsland:
    Pseudo-randomly adds islands. Can be made up of any biome ids already in the chain.
    
    Constructor:
        Arguments:
            long, GenLayer
        Argument Usage:
            layer base seed, parent layer



GenLayerZoom:
    Zooms the parent layer, effectively increasing its size.
    
    Constructor:
        Arguments:
            long, GenLayer
        Argument Usage:
            layer base seed, parent layer



GenLayerRemoveTooMuchOcean:
    Removes "excess" ocean biomes. If a biome position is ocean and all 4 biomes around it are ocean, the biome is changed to plains.
    
    Constructor:
        Arguments:
            long, GenLayer
        Argument Usage:
            layer base seed, parent layer



GenLayerAddSnow:
    Part of the vanilla heat map generation. Responsible for adding cold/icy heat levels. Pseudo-randomly replaces biome ids other than 0 with id 4, 3 or 1.
    
    Constructor:
        Arguments:
            long, GenLayer
        Argument Usage:
            layer base seed, parent layer



GenLayerEdge:
    Part of the vanilla heat map generation. Depending on which mode it's constructed with, does different things. Overall the point is making sure there are no heat ids surrounded by 
    unacceptable heat ids. Such as hot being surrounded by icy.
    
    Constructor:
        Arguments:
            long, GenLayer, GenLayerEdgeMode
        Argument Usage:
            layer base seed, parent layer, edge mode
        Notes:
            Mode options are automatically added as local variables under the names Edge_Mode_Cool_Warm, Edge_Mode_Heat_Ice and Edge_Mode_Special.



GenLayerAddMushroomIsland:
    Pseudo-randomly adds mushroom islands. If an ocean biome is surrounded by ocean, there is a 1/100 chance for it to be changed to a mushroom island.
    
    Constructor:
        Arguments:
            long, GenLayer
        Argument Usage:
            layer base seed, parent layer



GenLayerDeepOcean:
    Adds deep ocean biomes. If an ocean biome is surrounded by ocean, it is changed to deep ocean.
    
    Constructor:
        Arguments:
            long, GenLayer
        Argument Usage:
            layer base seed, parent layer



GenLayerRiverInit:
    Generates pseudo-random gibberish to be used for placing rivers and hills. No gibberish is generated for oceans.
    
    Constructor:
        Arguments:
            long, GenLayer
        Argument Usage:
            layer base seed, parent layer



GenLayerBiome:
    Replaces the heat map from the parent layer with a pseudo-random weighted biome map.
    
    Constructor:
        Arguments:
            long, GenLayer, WorldType, String
        Argument Usage:
            layer base seed, parent layer, world type object, generator string
        Notes:
            The WorldType object is automatically added as a local variable named worldType. The generator String is automatically added as a local variable named generatorString.



GenLayerBiomeEdge:
    Attempts to place acceptable biomes between unacceptable biomes. For instance, if desert and ice plains are touching, an extreme hills with trees is placed.
    
    Constructor:
        Arguments:
            long, GenLayer
        Argument Usage:
            layer base seed, parent layer



GenLayerHills:
    Uses the initialization layer to pseudo-randomly place hill biomes and other biome mutations.
    
    Constructor:
        Arguments:
            long, GenLayer, GenLayer
        Argument Usage:
            layer base seed, biome parent layer, hill/river initialization parent layer
        Notes:
            The first layer is the normal biome map, and the second is the hill/river initialization layer.



GenLayerRiver:
    Uses the initialization layer to create a river map.
    
    Constructor:
        Arguments:
            long, GenLayer
        Argument Usage:
            layer base seed, river initialization parent layer



GenLayerSmooth:
    Attempts to "smooth" things. I won't pretend to understand well enough to explain better.
    
    Constructor:
        Arguments:
            long, GenLayer
        Argument Usage:
            layer base seed, parent layer



GenLayerRareBiome:
    Pseudo-randomly replaces plains biomes with mutated_plains biomes. Otherwise known as a sunflower plains. 1/57 chance.
    
    Constructor:
        Arguments:
            long, GenLayer
        Argument Usage:
            layer base seed, parent layer



GenLayerShore:
    Adds shore biomes between ocean and land biomes.
    
    Constructor:
        Arguments:
            long, GenLayer
        Argument Usage:
            layer base seed, parent layer



GenLayerRiverMix:
    Combines the biome map and river map, adding river biomes depending on what biome it is.
    
    Constructor:
        Arguments:
            long, GenLayer, GenLayer
        Argument Usage:
            layer base seed, biome map parent layer, river map parent layer



GenLayerVoronoiZoom:
    Zooms the parent layer, effectively increasing its size. This version creates the most extreme changes of all the zoom layers.
    
    Constructor:
        Arguments:
            long, GenLayer
        Argument Usage:
            layer base seed, parent layer