Joseph Wright writes:
 > Will Robertson wrote:
 > > I noticed that recently too. I think it would be better to remove that
 > > variant in the expl3 syntax, since it doesn't seem like it adds much of
 > > importance but it adds a bit of obfuscation. 
 > 
 > As you probably guessed from the question, that would be my preferred
 > solution too.

I agree with both of you.let's mark it as obsolete for now and wait for Morten
to speak up who introduced it (I guess)

frank