Creates a link to a diff of a [WikiPage].
Why would you use this instead of a standard anchor? The LinkToTag automatically adds things like the correct class information (for styles), the jspwiki.baseURL property, etc.
----
!Usage
<wiki:DiffLink page="<page name>" format="anchor|url" version="<version number>" newVersion="<version number>">
;:''Link text''
</wiki:DiffLink>
!Parameters
;__page__: Page name to link to. If not set, uses the current page.
;__format__: If "anchor", creates the full hyperlink (<a href="...">link text</a>); if "url", outputs only the URL.
;__version__: The older version of the page. Can be "latest" to refer to the latest version; or "previous" to link to the previous version.
;__newVersion__: The newer version of the page. Can be "latest" to refer to the latest version; or "previous" to link to the previous version.
!Example
{{{
<i>
This page was last changed on
<wiki:DiffLink version="latest" newVersion="previous">
<wiki:PageDate/>
</wiki:DiffLink>
by <wiki:Author />.
</i>
}}}
Displays a text similar to the bottom of this page.