These are used to override or specify the security settings when $security is enabled. These are the possible settings: PHP_HANDLING - boolean. If set to &true;, the $php_handling setting is not checked for security. IF_FUNCS - array. The names of permitted PHP functions in {if} statements. INCLUDE_ANY - boolean. If set to &true;, any template can be included from the file system, regardless of the $secure_dir list. PHP_TAGS - boolean. If set to &true;, {php}{/php} tags are permitted in the templates. MODIFIER_FUNCS - array. The names of permitted PHP functions that can be used as variable modifiers. ALLOW_CONSTANTS - boolean. If set to &true;, constants via {$smarty.const.FOO} are allowed in the templates.