Marker

Markers are entitites intended for use in data packs and map-making. They can only be created with the /summon command.

Behavior
Markers are intended to have minimal behavior. Markers do not move, do not take damage, do not make sounds, and cannot be given status effects.

Markers do not cause any updates. Markers only exist on the server side, so they do not render.

Entity data
Markers have entity data associated with them that contain various properties of the entity.