Mikhail, this thread is getting quite long,
and difficult to follow.

It's quite clear that a new operator won't
be introduced for list insertion.

Furthermore, this thread has now become
a hard-to-follow and impossible-to-participate-in
debate.

If you have other ideas, could you maybe
formulate them unambiguously and post
them in a new thread? With examples.

I'm interested in reading about new ideas,
but not rhetorics and argumentations.

Best wishes,
Pål Grønås Drange