Minecraft wiki entry for Development_versions, associated text: Added infiniburn_overworld block tag.
Contains netherrack and magma blocks.
Fire will burn infinitely on blocks in this tag in the overworld.
Added infiniburn_nether block tag.
Contains the #infiniburn_overworld block tag.
Fire will burn infinitely on blocks in this tag in the nether.
Added infiniburn_end block tag.
Contains the #infiniburn_overworld block tag as well as bedrock.
Fire will burn infinitely on blocks in this tag in the end.