1. Writing method 3 is the correct and standard stock selection formula (= it is best to add a colon in front:, to adapt to other stock software);

The difference between 2.1 and 2, write a longer one The formula should be written in the form of 2, and the reference is simple;

3.

4. The stock selection formula is placed in the technical indicators or conditional stock selection column, and the trading system indicators have other ways of coding. (Refer to the formula in the software for the specific compilation method). For example, a sub-chart indicator can be made into a regular indicator. A stock selection indicator. A trading system indicator. The trading system indicator is used to test parameters (variables, like 1 in your formula, 2 days, or down 5%) to adapt to the current trend and prepare for future automated trading;

5.close[1] may be used for vbs programming. The stock software supports vbs or c++ other programming. If you know how to do it, you will be great. The function is so powerful. You can also show off your skills in foreign exchange and futures. A good foreign exchange trading system is expensive. Go to the foreign exchange forum and futures forum to have a look. The Sunshine Flying Fox Forum has formula trading. (Compiled formula) Not programming)

ref(close,1) is used in regular cycles, time-sharing cannot be used, pre may be used in any cycle;