Well, hello there.
You probably encountered this situation before as well. You are writing a mIRC script and you kinda miss syntax highlighting like in Visual Studio, Notepad2 or Notepad++.
I wonder why it hasn't been done yet and yes, I know there's some .dll, but it doesn't work with mIRC 7 anymore.
Khaled, I hope you'll think about this suggestion and try to integrate this feature in a future update.