|Allowed Values:||Domain Types, as defined in CIV4BasicInfos|
|Function:||Defines the tiles in which a Unit may travel, as well as how Units Interact with one another|
|Examples of Use:||Naval Units are Domain_Sea, Hawks Domain_Air, and most other units are Domain_Land|
Unit Domains can control where they are capable of moving, and how the interact with other units. Domain_Land units will automatically destroy any Domain_Sea or Domain_Air units in a city, but are generally incapable of interacting with them otherwise. Units flagged with Domain_Immobile become completely incapable of movement.
Some Bonuses can be granted according to Domain Type as well, like free Experience, or Production Bonuses.