When certain symbols appear in a winning combination a special feature of the particular game theme is activated, which is a Bonus. The player can choose from several items shown on a screen. A number of credits is revealed and awarded to the player when items are chosen. There are bonuses that use a mechanical device, such as a spinning wheel. It works in conjunction with the bonus to display the amount won.
There is a light on top of the slot machine called Candle. It alerts the operator that change is needed, hand pay is requested or there is a potential problem with the machine.
A grouping of slot machines, usually in a circle or oval formation are called Carousel.
A container where the coins that are immediately available for payouts are held is coin hopper. When a player collects credits this mechanical device rotates coins into the coin tray. There is a coin diverter used for redirecting excess coins into a drop bucket, or drop box when a certain preset coin capacity is reached.
Credit meter is a visual display of the amount of money or credits on the machine.
There is a container located in a slot machine's base that is used to divert excess coins. Typically, a drop bucket is used for low denomination slot machines. A drop box can be found in high denomination slot machines. A drop box contains a hinged lid with one or more locks whereas a drop bucket doesn't contain a lid. There is a scheduled basis on which the contents of drop buckets and drop boxes are collected and counted.
Electronic Gaming Machine is called EGM.
To denote a payout made by a slot attendant or cage, rather than the slot machine the term Hand pay is used. A hand pay occurs when the amount of the payout is more than the maximum amount that was preset by the slot machine's operator. Usually, the maximum amount is set at the level where the operator must begin to deduct taxes. A short pay can also result in a and pay.
There is Hopper fill used to record the replenishments of the coin in the coin hopper after it becomes depleted as a result of making payouts to players. The slip exists to indicate 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.
A straight or zigzagged line that crosses through one symbol on each reel, along which a winning combination is evaluated is called Payline. There are up to nine pay lines in classic spinning reel machines while there can be one hundred pay lines in video slot machines.
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.
Short pay refers to a partial payout made by a slot machine, which is less than the amount due to the player. This occurs if the coin hopper has been depleted as a result of making earlier payouts to players. An attendant will come and re-fill the machine or the remaining amount will be paid as a hand pay.
The manufacturer for all slot machines provide them with a document called Theoretical Hold Worksheet. It indicates the theoretical percentage that the slot machine should hold based on adequate levels of coin-in. The worksheet also indicates the reel strip settings, number of coins that may be played, the payout schedule, the number of reels and other information.
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.
Only the correct amount of money should be inserted into a machine. Always cash out your credits before leaving a machine.
While playing just have a good time. Be smart and change oyur bets according to your luck.