Volume basically means the aggregated size of all the trades in the market in a specific bar or candle. The higher the volume, the more trades were taken and the more action took place in this specific candle.
Volume are the thing that leads all the movements of price and anticipate the future trends. There is no trend that did not begin with strong volume in a direction, and almost all trends end when a volume decreases.
So, by monitoring volume we can get good conclusions and insight about trends that we cannot reach judging by price alone. For example: if we see a short candle in which price did not move significantly but has high volume it means that this candle is near a location of high action and a potential reversal zone. It usually happens in Doji candles
what you will receive

Volume X Indicator
Volume X Indicator.rar :
Volume X Indicator.ex4
XVolume.pdf ( Users manual )