What is the meaning of BAR on the slot machine?

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slot mega88 slot=end> ion-button> End ion-button> ion-buttons> ion-toolbar> bar type=indeterminate>ion-progress-bar> ion-toolbar> ion-header>  Coming from a history of slot machines in bars amongst other places initially awarding prizes like snacks, drinks etc, the bar originally

slotresmi88 Download this stock image: retro toy slot machine close up 7 bar Download the Bar in Slot Machine Line and Silhouette Icon Fruit Machine Win Pictogram Simple Frame for Bar Signboard, Jackpot Casino Symbol Collection on