Types/EntityPrototypeFlags

Flags are specified by list of string values.

value	meaning
pushable	When hit by car, it can be moved by the damage
placeable-neutral	Entities with this flag will be offered in the neutral tab in the map editor.
placeable-player	Player tab in map editor
placeable-enemy	Enemy tab in the map editor.
placeable-off-grid
player-creation	Changes the creeper behavior when these are in the way.
building-direction-8-way	Used for entities that have 8 rotation directions instead of 4, used only for rails and rail signals now.
filter-direction	Automatically choose the working direction on the location when building, rotate only between working directions, used for pump, rail signal and rail stop.
fast-replacable-no-rotate-only	Fast replacable logic cannot be used to just change direction. Used only for transport belt to ground.
breaths-air	Used to determine what kind of entities should be damaged by the poison cloud.

   flags = {"placeable-neutral", "player-creation"}