Sentiment line is a mt4 (MetaTrader 4) indicator and it can be used with any forex trading systems / strategies for additional confirmation of trading entries or exits.
(downloadable file Sentiment line.rar contains Sentiment line.ex4 and Sentiment line.mq4)
Free Download Sentiment line mt4 indicator 
How to install Sentiment line in forex trading platform metatrader 4?
- Extract the downloaded Sentiment line.rar.
- Go to “File menu” in Mt4 trading platform and click “open data folder”. Open Mql4 folder and open the indicators folder.
- Now paste the Sentiment line.ex4 and Sentiment line.mq4 files into indicators folder and restart the MetaTrader 4.