WordPress at a glance
action is not described

restrict_manage_comments action-hook . WP 3.5.0

Fires just before the Filter submit button for comment types.

Usage

add_action( 'restrict_manage_comments', 'action_function_name_8748' );
function action_function_name_8748(){
	// action...
}

Where the hook is called

WP_Comments_List_Table::extra_tablenav()
wp-admin/includes/class-wp-comments-list-table.php 361
do_action( 'restrict_manage_comments' );

Where the hook is used (in WP core)

Does not used.