The table shows the Net-Contracts, Long and Short Percentage of the latest report. The line chart shows if the Commercials, Institutionals and Retail Traders are more long biased (value above 50) or more short biased (value below 50).
The Report is only published weekly. This should not be used as an entry indicator, but can help to find market bottoms/top and the trend of the market.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.