The indicator displays the Ask and Bid, which are taken from the real tick history. Also, it is possible to evaluate the spread changes by visually comparing the Ask and Bid.
The 2016.10.07 02:06:03 date is set in the indicator by default. This allows to see the events of GBP decline on the GBPUSD symbol:
As the indicator shows the Ask and Bid values, it is also possible to see what spread was.
Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/16553
The Trigger Line indicator with arrows.Ticks indicator
It shows the tick price history (Bid/Ask) within all visible bars.