highest_order
return highest_order(*orders);
order = highest_order(orders);
int order = highest_order(orders);
order = highest_order(orders);
order = highest_order(orders);
order = highest_order(orders);
order = highest_order(orders);
order = highest_order(orders);
order = highest_order(suitable_orders);
order = highest_order(hpage_orders);
order = highest_order(within_size_orders);