If you do not use MetaEditor to code, which alternative editor do you use?
I cannot speak for others, but I personally use both MetaEditor as well as Microsoft Visual Studio Code (free and open-source) with the MQL4/5 Syntax Highlight extension.
Sometimes I like to use Emacs rather than MetaEditor, because I feel more comfortable with the Emacs keyboard shortcuts. I just set it to c++-mode and it works fine for me.
you can use any IDEs, what really matters is metaeditor compilers, to generate ex4/ex5 file(s).
Mostly SciTE. Sometimes VIM.
It is mainly about personal preferences, but the main advantage for me, is the ability edit multiple files (or the the same one at different positions) side-by-side, just as shown in the "image" I posted. Sometimes, I even have 3 files side-by-side.
Then there are other "power" uses as well, such as "multi-cursor editing" or the ability to create and use "code snippets", and a few others.
Obviously, some of these features are also available in other editors. I just settled on VSCode for myself as I also use it for other languages as well.
And here's Geany where you also can track variables, classes and functions.
Yes, it also has "Code Folding", "Auto-complete/IntelliSense", "Code-snippets" as well as "Bracket matching", but I am not advocating VSCode over others, it is simply my own personal preference.
If you are interested, here is an overview of the features: Code Editing Features in VS Code