Role of Symbol Properties in MQL5 Trading Programs
Two CFD instruments can display nearly identical price movements while producing very different financial results. Their contract sizes, trading increments, margin requirements and execution rules may differ substantially. For an automated strategy, interpreting these specifications correctly is as important as identifying a trading opportunity.
In mt5, MQL5 programs can retrieve instrument specifications through functions such as SymbolInfoDouble, SymbolInfoInteger and SymbolInfoString. These properties allow trading logic to adapt to different markets, but incorrect assumptions can introduce five distinct risks.
Contract Specifications Can Produce Incorrect Position Exposure
A program that calculates trade size from price distance alone may overlook how much underlying exposure each...