woocommerce_auth_page_header action-hook . WC 1.0

Usage

add_action( 'woocommerce_auth_page_header', 'action_function_name_1123' );
function action_function_name_1123(){
	// action...
}

Where the hook is called

do_action( 'woocommerce_auth_page_header' ); ?>

<?php do_action( 'woocommerce_auth_page_header' ); ?>

Where in WP core the hook is used WooCommerce

add_action( 'woocommerce_auth_page_header', 'woocommerce_output_auth_header', 10 );