====== Zone Upgrade Model ======
[ [[data|data models]] ]

Every zone upgrade gets its own page. (Though in some cases, such as special projects with a lot of upgrades, an exception is made.)

^ Zone Upgrade  ^^
^ Description_wiki    | A one-line description of the zone type for indices. |
^ Applies To_rule*    | A list of zone types on which this upgrade can be applied. |

===== Example =====
<code>
<data !zone_upgrade>
Description [wiki]  : 
Applies To [rule]*  : 
</data>
</code>
