What are the peculiarities of SellByCustomEMA parameter operation, and can you give an example of how to write the EMA formula for selling an open position?

: Strategy settings

The SellByCustomEMA parameter can be written with different EMA condition formulas, but unlike the other filters, the sale is triggered when the EMA conditions are met, not when they are exited.
Example: SellByCustomEMA=EMA(3,1)>1 means to sell a position on the rise, when the rise in 3 seconds, is greater than 1%.