On 29 Mar 2010, at 16:25, Kino wrote:
[...]
> I discovered a better solution in the bath-tub.

That will be recommended in the next update of NWP Help file.
> 
> 	<letter>(?:\b|(?!\S))
> 
> works for words in any script. This expression stands for "<letter> followed by a word boundary or NOT followed by a visible character" and a note reference is not treated as a visible character.

Thanks.

Hamid