Real author: Il Anokhin
The indicator displays the change in price as a percentage relative to the Open price of the current candlestick. It can display up to 8 pairs on the chart as a chart comment. Candlestick timeframe is selectable.
This code was first implemented in MQL4 and published in Code Base at mql4.com on 23.08.2012.
Fig1. The CandleDifference indicator