I intend to use quite some If-Then and If Then Endif commands.
But sometimes it is hard to keep a right view on things when you don't see which IF commands stands alone and which IF commands are closed with an Endif, and if so, Which Endif in that manner.

Would it be an idea to mark an IF command (when clicking on the specific line) along with its closing Endif command?

It would make things so much more clear. :-)