SYNTAX STRAWMAN: Please review & reply to see if we can reach consensus

=markus+&^email/$ref/
   =markus+&email!:uuid:f81d4fae-7dec-11d0-a765-00a0c91e0001
=markus+home+&^email/$ref/
   =markus+&email!:uuid:f81d4fae-7dec-11d0-a765-00a0c91e0001
=markus+work+&^email/$ref/
   =markus+&email!:uuid:9ce739f0-7665-11e2-bcfd-0800200c0002
=markus+&email!:uuid:f81d4fae-7dec-11d0-a765-00a0c91e0001:/:/
   ""
=markus+&email!:uuid:9ce739f0-7665-11e2-bcfd-0800200c0002:/:/
   ""
=markus+&email!:uuid:9ce739f0-7665-11e2-bcfd-0800200c0002$&^time:/:/
   "2013-04-11T10:11:12Z"
=markus+home+^address/$ref/
   =markus+address!:uuid:3a96e460-7be9-11e2-b92a-0800200c0003
=markus+address!:uuid:3a96e460-7be9-11e2-b92a-0800200c0003+&street#1:/:/
   "123 Main St"
=markus+address!:uuid:3a96e460-7be9-11e2-b92a-0800200c0003+&street#2:/:/
   "Apt 23"
=markus+address!:uuid:3a96e460-7be9-11e2-b92a-0800200c0003+&^city:/:/
   "Vienna"
=markus+address!:uuid:3a96e460-7be9-11e2-b92a-0800200c0003+&^country:/:/
   "Austria"
=markus+address!:uuid:3a96e460-7be9-11e2-b92a-0800200c0003$&^time:/:/
   "2013-04-11T10:11:12Z"
%+&email/$is+/
   $string
%@example%+&email$&xbnf#1:/:/
   "1*DIGIT '@example.com'"