Using Includes
You can include the content of one page in another page by typing the following right into the editor:
[[include:SomePage]]
Just replace "SomePage" here with the name of the page you want to include.
The most common use of includes is to reuse a piece of content in several places on your site. When you edit the included page, it will automatically update in all of the pages that include it.
If a user visits a page that they can see, but it includes a page they don't have access to view, the include will not display. This provides a convenient method for having sections of content that only display to authorized users, but within the context of content that everyone can see.
You can also use includes to place Javascripts that are managed in plain text edited pages into the content of a page that uses the rich text editor.
As with Inserting Links, you can force an include tag
to display as it is instead of getting processed as an include by using
a ~ character, like this: [[~include:IgnoreThis]]. When you save the page, the ~ will not display.
Note that Scripted Pages cannot be included using this method for security reasons. You must use <div editme="process 'PageName'"></div> in a Layout or Scripted Page to include the result of another Scripted Page.