woocommerce_product_additional_information_heading filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_product_additional_information_heading', 'filter_function_name_4081' );
function filter_function_name_4081( $__ ){
	// filter...

	return $__;
}

$__

-

Where the hook is called

$heading = apply_filters( 'woocommerce_product_additional_information_heading', __( 'Additional information', 'woocommerce' ) );

Where in WP core the hook is used WooCommerce