The trendline script is made for manual input of trendlines using point clicks on the chart. The script will then see if price respects these lines by the parameters you input in settings panel. On a respectable bounce it will print buy/sell arrows. The script also has functionality to send alerts, this is helpful if you want to automate trendlines. I created this...
Second day at Pinescript and I am attempting to tweak the Bollinger Bands directed strategy to send alerts to Zignaly in order to automate long buy/sells.
I've left in the short script though for completeness.
The buy and sell instructions work perfectly but I don't know how to do a cancel order alert (as included in the original strategy)