The indicator is built as an educational purpose and is therefore not a recommendation for buying/selling shares.
The idea is to create a visual form in a graph that shows if there is any trend, both positive and negative. A dialog box with a warning tells you what trend prevails.
In the code, there is an opportunity to take a position or go out of position if you want to create a strategy around this trend indicator. However, I strongly recommend not to rely solely on this indicator as a buy/sell decision as the results will most likely be negative if you buy on a positive trend and sell on a negative trend. It must be combined with other ideas and therefore this script works more as a complement to your own strategy.
It is free for anyone to use this indicator and make it better.