+- If a top-level rule has labels but no head-tag, like this
+ Foo = a:Bar b:Baz
+ then infer the name of the rule it belongs to
+
+create( $c:{...}, class ) =
+ return create($c:{...})
+
+create( h:{...}, class ) =
+
+create( , String)
+
+create( _:{...}, String) = treat as char[]
+create( _:{...}, c[] ) = { create(.,c), create(.,c), ... }
+
+create( $c:{...} ) =