AppDomain element
Specifies an additional domain that will be used to load pages in the add-in window.
Add-in type: Content, Task pane, Mail
Syntax:
<AppDomain>string </AppDomain>
Contained in:
Remarks
The AppDomains and AppDomain elements are used to specify any additional domains other than the one specified in the SourceLocation element. For more information, see Office Add-ins XML manifest.