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Most of the following features are stored in "assets\minecraft\optifine\ctm\patrix" folder in this pack, can try removing the ones you don't want.
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- asphalt pavement, road manhole cover, pothole, patches
random texture of gray concrete block, depends on world seed and x,y,z location

- yellow road lines
gray concrete dust block in savanna or birch_forest biome

- road chinese words
gray glazed terracotta block in various biomes
taiga = ¨® car
badlands = ¦æ go/pass
dark_forest = ¸T no/restricted
swamp = ºC slow
and direction arrow for rest of the biomes

- modern concrete
light gray concrete block

- damaged concrete
bedrock in any overworld biomes above y=5, connects to all concrete or stone type blocks

- scifi screens
black wool or carpet in any biomes other than end or void type biomes

- bone piles
purpur block in any biomes other than end or void type biomes

- roof tiles
red nether bricks in any biomes other than nether type biomes

- thatch
birch slab/stairs/pressure plate in any non-birch biomes

- timber frame tudor
white = double diorite slab
yellow = double sandstone slab
brick = double brick slab
planks = double spruce slab
mud = double mud brick slab

- potion shelves
double oak slab

- food baskets
petrified oak slabs
fishes = any ocean, beach, or swamp biomes
spices = any desert, savanna, or badlands biomes
breads = any forest or taiga biomes
fruit/vegetables = any rest of the biomes

- medieval tankards and bowl of food
dry sea pickles, 1~3 are tankards and 4 is a bowl of random food

- nest
dry dead horn coral fan in any non-ocean biomes

- 3 block tall doors
any powered doors

- white ceramic tiles
end stone brick slab/stairs/wall block in any biomes other than end or void type biomes