A special feature of the particular game theme, which is activated when certain symbols appear in a winning combination is called Bonus. The player can choose from several items shown on a screen. After choosing items a number of credits is revealed and awarded. A mechanical device, such as a spinning wheel is used by some bonuses. The amount won is displayed with the help of it in conjunction with the bonus.
A light on top of the slot machine is Candle. It flashes to alert the operator that change is needed, hand pay is requested or a potential problem with the machine.
The term carousel is used to denote a grouping of slot machines, usually in a circle or oval formation.
Coin hopper contains the coins that are immediately available for payouts. It rotates coins into the coin tray when a player collects credits. When a certain preset coin capacity is reached, a coin diverter automatically redirects excess coins into a drop bucket, or drop box.
Credit meter is a visual display of the amount of money or credits on the machine.
A a container located in a slot machine's base where excess coins are diverted from the hopper is Drop bucket or Drop box. A drop bucket can usually be found in low denomination slot machines. High denomination slot machines use a drop box. There is a hinged lid with one or more locks in a drop box and there ais no such lid in a drop bucket. There exists a scheduled basis for collecting and counting the contents of drop buckets and drop boxes.
Electronic Gaming Machine is called EGM.
The term Hand pay means a payout made by a slot attendant or cage, rather than the slot machine. When the amount of the payout exceeds the maximum amount that was preset by the slot machine's operator a hand pay occurs. The maximum amount is set at the level where the operator must begin to deduct taxes. A hand pay can also be a result of a short pay.
A document used to record the replenishments of the coin in the coin hopper after it becomes depleted as a result of making payouts to players is Hopper fill. There is the slip that indicates the amount of coins placed into the hoppers, the signatures of the employees involved in the transaction, the slot machine number and the location and the date.
Low Level or Slant Top slot machines include a stool so you can sit and play. You can only stand playing Stand Up or Upright slot machines.
The term Optimal play is used to denote a payback percentage based on a gambler using the optimal strategy in a skill-based slot machine game.
Payline is a straight or zigzagged line that crosses through one symbol on each reel, along which a winning combination is evaluated. Classic spinning reel machines usually have up to nine pay lines, while video slot machines may have as many as one hundred.
The term Rollup is used to mean the process of dramatizing a win by playing sounds while the meters count up to the amount that has been won.
If a partial payout made by a slot machine is less than the amount due to the player it is called Short pay. If the coin hopper has been depleted as a result of making earlier payouts to players the short pay happens. The remaining amount due to the player is either paid as a hand pay or an attendant will come and re-fill the machine.
Theoretical Hold Worksheet is a document provided by the manufacturer for all slot machines. The theoretical percentage that the slot machine should hold based on adequate levels of coin-in is idicated in it. The reel strip settings, number of coins that may be played, the payout schedule, the number of reels and other information is indicated in the worksheet.
Weight count is an American term, referring to the dollar amount of coins or tokens removed from a slot machine's drop bucket or drop box and counted by the casino's hard count team through the use of a weigh scale.

I tis important to now what you are playing.
It is important to know the correct amount of coins that should be inserted into a machine. Your credits should be cashed out before you leave the machine.
Only if you have fun your gambling won't be stressful. Be smart and change oyur bets according to your luck.