replace with

"vanilla biomes to override" {
    B:"Birch Forest"=false
    B:"Birch Forest Hills"=true
    B:"Cold Taiga"=true
    B:"Cold Taiga Hills"=true
    B:Desert=false
    B:DesertHills=false
    B:"Extreme Hills"=false
    B:"Extreme Hills Edge"=false
    B:Forest=false
    B:ForestHills=true
    B:Hell=false
    B:"Ice Plains"=true
    B:Jungle=false
    B:JungleEdge=true
    B:JungleHills=true
    B:Mesa=false
    B:"Mesa Plateau"=false
    B:"Mesa Plateau F"=true
    B:MushroomIsland=false
    B:MushroomIslandShore=false
    B:Ocean=false
    B:Plains=false
    B:River=false
    B:"Roofed Forest"=true
    B:Savanna=false
    B:"Savanna Plateau"=true
    B:Swampland=false
    B:Taiga=false
    B:TaigaHills=true
}