During this phase of world generation, our world map is represented by a grid whose cells are 8✕8 chunks in area (128✕128 blocks). Each pixel in fig. 1 is one of these cells. From now on, we will refer to these cells as _pixels_.
Some placements “bring” biome pixels along with them. For example, this placement will reserve 9 pixels of frostlands biome at the start, and eventually attempts to spread out to 40 pixels.
"biome": {
"biome": "frostlands",
"total_pixels": 40,
"starting_pixels": 9,
"spread_priority": 0
},
Many placements do _not _bring biome pixels with them, but any placement that uses distance rules is allowed to try!