Wikis on OS X Server - How do I include or embed content from one wiki page on another?

How do I include or embed content from one wiki page on another in Wiki Server on OS X Server? The other wiki page resides on the same server.

This is known as an "include", Redmine has it:

Include a wiki page. Example:
!{{include(Foo)}}
or to include a page of a specific project wiki:
!{{include(projectname:Foo)}}

MediaWiki has it under the name of "transclusion": http://www.mediawiki.org/wiki/Transclusion

Commercial wikis like Confluence have it: https://wiki.mq.edu.au/pages/viewpage.action?pageId=79103996

Edit: The pages are in the same wiki, actually. I don't want external content, it's just that a lot of information in one page has to appear exactly in other pages.

Ok. To anyone running up the same wall I did... I switched to an OpenSource Ruby on Rails app called WAGN http://wagn.org

It does this exact thing and much more.