Preference:Separator character question

[Bengt Thuree]

On Sat, 2006-04-15 at 10:57 -0400, Derek Atkins wrote:
> Quoting Bengt Thuree <bengt at thuree.com>:
> 

> > Any single non-alphanumeric unicode character.
> >
> > To me, alphanumeric means a-z, A-Z, 0-9 plus .,;: etc...
> 
> Nope, alphanumeric is [a-zA-z0-9].  Alpha == letter.  Numeric == number.
> Punctuation characters are generally not included in "alphanumeric."

And what does

"Any single non-alphanumeric unicode character" mean?

>From the tooltip to Preference:Accounts:Separator Character:Character

/Bengt