Immutability

[Diez B. Roggisch]

> Sigh.  No.  It's terrible.  What it documents is the use of the property
> FUNCTION.  It does not document what properties ARE, and how they interact
> with the rest of the language.  Until you know that, it is so ambiguous
> as to be almost totally useless - and it is THAT information that needs to
> be in the reference manual, but is only in whatsnew2.2.

I have to second that - I found myself reading through "What's new" from
various versions to find that specific feature. It would be at least good
to see all of them grouped together to make an easier read. Still, that is
not optimal.

Diez