Editing WoW:Getting the current interface number (section)

== Interface number basics ==
The WoW 'interface number' is the current version for the actual UI in WoW. AddOns use this number in their own [[TOC file]] to denote the WoW user interface they were created for.

By default the WoW client skips over any AddOns whose interface version does not match its own. This is an effort to keep the client's behavior free of errors due to changes in the API.

In the AddOn TOC file:

 ## Interface: 70000

Interface number 70000 would mean that the AddOn is compatible with WoW Patch 7.0.3. The same interface number can be used for a series of WoW patches, usually until the next 'minor' release version. For example for with WoW Patch 7.1.0, 70100 would likely be the new interface version number.