If you have multiple caches for a template, you can clear a specific cache by supplying the cache_id as the second parameter.
You can also pass a $compile_id as a third parameter. You can group templates together so they can be removed as a group, see the caching section for more information.
As an optional fourth parameter, you can supply a minimum age in seconds the cache file must be before it will get cleared.
See also clear_all_cache() and caching section.