Module Advanced Options
From Joomla! Documentation
- Alternative Layout. If you have defined one or more alternative layouts for the Single Article menu item, you can select the layout to use for this article. See Layout Overrides in Joomla 2.5 for more information about alternative layouts.
- Module Class Suffix. Setting this parameter causes Joomla! to either add a new CSS class or modify the existing CSS class for the div element for this specific module. See here for more information
- Caching. (Use Global/No Caching) Choose whether you wish to cache the contents of the module.
- Cache Time. The time before a module is recached.