woocommerce_product_description_heading filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_product_description_heading', 'filter_function_name_3068' );
function filter_function_name_3068( $__ ){
	// filter...

	return $__;
}

$__

-

Where the hook is called

$heading = apply_filters( 'woocommerce_product_description_heading', __( 'Description', 'woocommerce' ) );

Where in WP core the hook is used WooCommerce