    public function setup($config) {

        // These definitions are not intrinsically safe: the attribute transforms
        // are a vital part of ensuring safety.

        $allowed = $config->get('HTML.SafeScripting');
        $script = $this->addElement(
            'script',
            'Inline',
            'Empty',
            null,
            array(
                // While technically not required by the spec, we're forcing
                // it to this value.
                'type' => 'Enum#text/javascript',
                'src*'  => new HTMLPurifier_AttrDef_Enum(array_keys($allowed))
            )
        );
        $script->attr_transform_pre[] =
        $script->attr_transform_post[] = new HTMLPurifier_AttrTransform_ScriptRequired();

    }
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.