Clarification - MarketPress Coupons

I have what is (hopefully) a quick question about MarketPress coupon codes. When you enter the Max uses of a code - how is that applied? Does this mean the maximum number of times each user can use a code OR does it mean the maximum number of times the code can be used? Said another way, am I creating a coupon that every customer can use, for example, 1 time, OR am I creating a coupon that only up to, for example, 50 customers can use?

Different e-commerce systems use different methods. Thanks for clarifying what this setting means for MarketPress.