I went to the bar the other day and when I tried to pay for the drink by my credit card, the bartender asked me something to the effect whether I wanted to have my credit card open for further payment or close my credit card for that payment only. I did not fully catch what she said, but I heard some words like "...under the tab(?) or close...?"
It would be grateful if you could let me know what are the common expressions bartenders use in this kind of situation and how I should respond in such situation.