This signifies a clear direction up or down of the price graph. Is generally said that there is a trend when dates can be visibly placed between two straight, almost parallel lines. It can show the direction of price movement upwards ("upward trend" - see), down ("downward trend" - see), and just to the side, almost horizontally ("flat" - see). You can draw trend lines independently, simply as on the chart they of course do not appear. To do this, open your terminal (see). In the top menu, find the tab "Insert" and then click "Lines". From them, choose the one that is most appropriate under the existing price movement: "horizontal" lines will outline flats, "trend lines" you can set the way you want and "the angle of trend lines" further shows how many degrees one line deviates from another. This can be useful to professional traders (see) for specific trading strategies. The outline of two trend lines is called a “channel”. There is a saying among traders: "The trend is your friend". Professionals do not recommend doing transactions that are "against the trend." If you see that the movement is basically upwards, do not open the transaction for sale, only if you do not do pipsing (see). Usually trade on an uptrend as follows: open the deal to buy when the price reaches the bottom line ("support" - see), and close the deal when the price reaches the upper line ("resistance" - see). If the trend is downwards, then the situation is completely reversed. Such trade is called a "trade in the channel." To learn more about trading with trends, you can find information in the book “Trend following: learn to make millions in Up or Down markets” but Michael Covel. Regarding how to determine the trend, more information can be found in “The visual investor. How to spot market trends”, by John Murphy.