http://breezewiki.bunny5exbgbp4sqe2h2rfq2brgrx3dhohdweonepzwfgumfyygb35wyd.onion/minecraft/wiki/Resource_location
However, for content creators, it is recommended to always use namespaced identifiers no matter whether required or not. The following is a list of all places that use namespaced identifiers: Build-in contents Vanilla blocks, items, entities, status effects, dimensions, biomes, structures, features, etc.