Hi,

I am reading the Symbol section of the ES6 spec (19.4), and my understanding is 
that calling the Symbol constructor does *not* add an entry to the 
GlobalSymbolRegistry. Is that correct?

For example:
var s1 = Symbol("foo");
var s2 = Symbol.for("foo");

In this example, s1 and s2 would be two distinct symbols. And in the following 
example:

var s1 = Symbol("foo");
var s2 = Symbol.keyFor(s1);

In this example, s2 would be undefined.

Am I understanding correctly?

Thanks,
Jason

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