Themes and Templates
The notions of “themes” and “templates” are at the core of the HTML Struts Tags provided by the framework.
Definitions
| tag | A small piece of code executed from within JSP, FreeMarker, or Velocity. | 
| template | A bit of code, usually written in FreeMarker, that can be rendered by certain tags (HTML tags) | 
| theme | A collection of templates packaged together to provide common functionality | 
See Struts Tags for more about the HTML and other tags provided by the framework.
Template Basics
| Template Loading | How templates are loaded | 
| Selecting Template Directory | How the template directories are loaded | 
| Selecting Themes | How you can pick a theme when writing your results | 
| Extending Themes | How to create your own themes based on existing themes | 
More About Themes
| simple theme | A minimal theme with no “bells and whistles” | 
| xhtml theme | The default theme that uses common HTML practices | 
| css_xhtml theme | The xhtml theme re-implemented using strictly CSS for layout | 
| ajax theme | A theme based on the xhtml theme that provides advanced AJAX features | 
