This a list of groups which are shared across multiple mods and games, or groups which have been accepted by the community to have a standard meaning. For the list of special groups, see Groups#Special groups.
not_in_creative_inventory=1: This item must not appear in the creative inventory
not_in_craft_guide=1: Crafting recipes which have this item as a result will not be shown in a crafting guide. The item may still be shown as an ingredient.
For dyes, the color groups used in Minetest Game have been widely accepted. If you add a dye, you should add the appropriate groups. The groups have names like
These groups are used to classify something. The rating is assumed to be 1. These groups mean that the item in question is something. E.g. the group “
tree=1” means the item is a tree trunk.
tree: Tree trunk
leaves: Leaves, (pine) needles, and the like
water: Water (source or flowing)
lava: Lava (source or flowing)
wood: Block of wooden planks
wool: Block of wool