Very useful.

I tend to avoid post conditionals nowadays as I long ago realised, as with your other examples, readability was far more important.

Only one I do not personally do is the Command Arguments example, I'm old and set in my ways and like using the comma 😁

Another possible mention might be "goto".

Oh, and your note on functions not being case-sensitive is only for system (intrinsic) functions.

I think the message overall is we no longer have the same memory and screen limitations and so spaced out, readable, and maintainable code is far more important than the old compacted method of writing mumps/objectscript.