apply_filters( 'login_form_defaults', array $defaults )

$defaults = array(
	'echo' => true,
	'redirect' => ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'],
	'form_id' => 'loginform',
	'label_username' => __( 'Username' ),
	'label_password' => __( 'Password' ),
	'label_remember' => __( 'Remember Me' ),
	'label_log_in' => __( 'Log In' ),
	'id_username' => 'user_login',
	'id_password' => 'user_pass',
	'id_remember' => 'rememberme',
	'id_submit' => 'wp-submit',
	'remember' => true,
	'value_username' => '',
	'value_remember' => false, // Set this to true to default the "Remember me" checkbox to be checked.
);