a scripted attribute definition example from the wiki

[Mark K. Miller]

On Wed, 27 Jul 2016, Peter Schober wrote:

> I see it's thre in my local config, so I must have added it later and
> forgot to add it to the wiki. I can do that and add a note about the
> dependency warning this will trigger.

Either which way, no big deal about not getting the edits exactly correct. 
The big deal part (at least to me,) is having useful examples to get me 
started.

So, Peter, thank you for the examples (especially if you also provided 
"Varinat 2"!)

Thanks,

Max