I can't set it myself. I have to go to a special technical support website to download it.
/viewthread.php? Tid=779 1 is available for download. Just register and download yourself.
The so-called level is to see whether the outer rail or the middle rail (composed of a line) of the bollinger Band is level. Generally, it is better to choose the outer rail. It is also very important that the mode of breaking ground into gold cannot be simply done at the bollinger band level. It is also important to note that it can only be used when the market is weak, that is, it is not affected by major data and comments.
I suggest LZ read more books! I don't even seem to understand. I hope it helps you.