The Referanceable Objects are special objects types that can only be referenced to from the Extra field in the Level Spawners and Level Decoration Spawners.
These can be object containers, like 'All UFOs' or define some special ingame objects, like the Base or the player Spaceship.
This is a description of all the available Referenceable objects.
All Wing Drones
All Shock Towers
All regular enemy UFOs
All Enemy items,
All UFO Bosses
The Player Spaceship
The Player Base
All the Space Stations : Jumpgate, Mining Station, Dropoff Station and Repair Station
All the friendly items in a level
All the Spacemen
All Level StuffEdit
Everything that exists in a level but the Player Ship and the Base
All the Decorations in a level
All Alternate TargetsEdit
All the alternative targets (non-moving and ground targets), like the White Ball, Buildings and Ground Turret