How to Create then Write to and Read from a File using mql4 Programming

Ever wonder how to CREATE and then WRITE to or READ from a file using mql4 programming?
In this video I will use the file writing and file reading functions to save parameters so that our indicator will open the way that it was left when closed.
You will learn how the FilesExist, FileOpen, FileClose, FileWrite, FileReadNumber and FileReadString functions work.

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