...
The controlheader.ftl is referenced using ${parameters.theme} so that the code can be reused by the ajax theme.
XHTML Theme Header
Now let's look at the controlheader.ftl and controlheader-core.ftl. Again, these are split up for easy re-use with the ajax theme) contents:
| Wiki Markup |
|---|
{snippet:id=all|lang=xml|url=struts2/core/src/main/resources/template/xhtml/controlheader.ftl} |
...