The general tab contains the information applicable to the entire theme. 
<ul>
<li> Theme Id – this read-only field displays the internal unique system theme ID. 
<li> Name – this field contains the theme name. The name is used to refer to the theme on the front-end. It also has to match the directory under ‘in-portal/themes' where all templates for this theme will be stored. 
<li> Description – this field contains the description of the theme. It is primarily for the administrator's internal notes about the theme, however it can be also displayed on the front-end. 
<li> Enabled – this is the theme status. 
<li> Language Cache Timeout – The tags, cached on a page, expire after this period (specified in seconds). The language caching is implemented to reduce the server load and speed up the page download times. It caches the values of the language phrases used on a given template, and uses the cache instead of evaluating the languages dynamically. This also means that if you modify a template, and add or remove some language labels, your changes will not take effect until after the cache refreshes. To disable the caching, set this value to zero. Under normal circumstances, we recommend keeping the language cache timeout setting at its default value of 3600 seconds (1 hour). 
<li> Primary – this flag indicates whether the theme is primary or not. If you check it while editing a non-primary theme, the theme that used to be primary will no longer be – only one primary theme can exist in a system.
</ul>