1) its mq4
2) you can open it in Metaeditor.. should be the default program when you double click the file. You can edit it there and compile it (F5) into an ex4 which MT4 can read
3) google some tutorials

You are missing trading opportunities:
- Free trading apps
- Over 8,000 signals for copying
- Economic news for exploring financial markets
Registration
Log in
You agree to website policy and terms of use
If you do not have an account, please register
Hi everyone. Can you please teach me how you open and execute a file to code? I'm kind of a rookie. I only learnt some basic programming, but up until now i have no idea how to open a file to actually code something. Can somebody help me? Any help would be appriciated