$allowed $allowed : Lookup table of allowed scalar values. e.g. array('allowed' => true). Null if all values are allowed. Type
$aliases $aliases : List of aliases for the directive. e.g. array(new HTMLPurifier_ConfigSchema_Interchange_Id('Ns', 'Dir'))). Type
$valueAliases $valueAliases : Hash of value aliases, e.g. array('alt' => 'real'). Null if value aliasing is disabled (necessary for non-scalar types). Type
$version $version : Version of HTML Purifier the directive was introduced, e.g. '1.3.1'. Null if the directive has always existed. Type
$deprecatedUse $deprecatedUse : ID of directive that supercedes this old directive. Null if not deprecated. Type
$deprecatedVersion $deprecatedVersion : Version of HTML Purifier this directive was deprecated. Null if not deprecated. Type
$external $external : List of external projects this directive depends on, e.g. array('CSSTidy'). Type