In the stock operating system, the enlargement and reduction of the K-line chart are controlled by the up and down keys on the keyboard, with the up key enlarged and the down key reduced. So if you want to make the K-line diagram bigger, press pgup, and if you want to make the K-line diagram smaller, press pgdn.

K-line chart is also called candle chart, daily line, yin-yang line, bar line, red and black line, etc. , also known as the "K line". It is based on the opening price, the highest price, the lowest price and the closing price of each analysis period. Morphology can be divided into reverse morphology, arrangement morphology, gap and trend line. The post-K-line chart is introduced into the stock market and futures market because of its ingenious and unique drawing method. The drawing method of K-line chart in stock market and futures market includes four data: opening price, highest price, lowest price and closing price. All K-lines are centered around these four data, reflecting the general situation and price information. If you put the daily K-line chart on a piece of paper, you can get the daily K-line chart, and you can also draw the weekly K-line chart and the monthly K-line chart. K-line is a columnar line with hatching and entity. The hatching part above the entity is called the upper hatching and the lower hatching. Entities are divided into positive and negative lines. (Shaded lines represent the highest and lowest prices of the day's transactions, and entities represent the opening and closing prices of the day. Among them, the positive lines are usually represented by red, white columns or black boxes, and the common negative lines are represented by green, black or blue solid columns. In addition to the above situation, when the "crosshair" is seen by us, the solid part is converted into a line. In fact, the meaning of the crosshair is very simple, that is, the closing price of the day is the opening price. Understand the K-line, you can better grasp the buying and selling points (for the stock market, although there is no way to know the specific things, but the K-line has certain guiding significance), and novices have the best grasp.