Taking input from the user
When u attach an expert a window opens with user configurable inputs... Extern variables are the ones that can be changed in that window. If u still don't understand then I recommend u start by reading MT4 user manual (just press F1), get acquainted with the Terminal and then read the Book... Cause your question is way too rudimentary.
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I want to take input from the user the first time a mql4 program starts. The input can be as simple as one number. Is this possible?
Thanks.