$blocklist = array_merge($blocklist, array( 'mymodification' => array( 'class' => 'MyModification', 'title' => 'My Modification', 'hook_location' => 'profile_left_last' )));class vB_ProfileBlock_MyModification extends vB_ProfileBlock{ var $template_name = 'memberinfo_block_mymodification'; function confirm_empty_wrap() { return false; } function confirm_display() { return ($this->block_data['mymodification'] != ''); } function prepare_output($id = '', $options = array()) { $this->block_data['mymodification'] = 'Content to show in the tab.'; }}