Aha. You use Cache Studio Evaluation for development. Still have a question: why your employer doesn't give you the full version on Ubuntu which could be downloaded from WRC

On the other hand, you don't need a cloud to develop on IRIS Community Edition.  Check @Dmitry Maslennikov recent article. He develops locally on IRIS CE in docker using VSCode.

So it could be named "Side effects of Quit and Return command with $Increment", right?

As to RETURN, it seems that InterSystems promotes this command nowadays as a more visually clear remedy to exit methods.

We want to promote things which help.

It seems to me that having "return" in ObjectScript we can change the meaning and usage of "quit" as for cycles interruption only?

Not touching "dot syntax" and argumentless "quit" in for what are the cases of using "quit" we have?