One order does not have to mean one trade, and @Pact_Swap gives liquidity providers control over that. C1 orders can be created with a defined maxUses, allowing the same order to be used multiple times before it is exhausted. That is useful for LPs who want to keep quoting the same market without recreating an order after every single fill. Set the price. Set the liquidity. Set how many times the order can be used. The protocol keeps track of the usage. Simple feature, but exactly the kind of tooling an order-book DEX needs if liquidity is supposed to stay available instead of constantly being rebuilt