[Action-527] Propose spec change to address extensibility in general

Hi all,

I discussed with with David offline, and he agreed that we can close 
this finally by adding this sentence from
"Foreign elements can be used only inside rules. Foreign attributes can 
be used on any element defined in ITS."
also to

If nobody disagrees in the next day I will do the edit. We won't open a 
new issue here since it's just copying text.



Received on Thursday, 30 May 2013 11:24:26 UTC