This page is an example of using the wrap tag. The wrap tag takes the current content and inserts it at a placeholder in an external file.
The insertion point may be a placeholder, or any view element (i.e. a tag with a wact id)
You can choose to insert the wrapped content after any content that is under the
insertion point:
<wact:wrap insertat="someId" file="wrapper.html">
or you can replace the content under the insertion point:
<wact:wrap replaceat="someId" file="wrapper.html">
This page uses replaces the content of the wrapper file with this page.
Also, notice how this page uses the SET tag to pass a variable to the wrapping file to use as the title and header of this page.