Allow for @type: {} in expansion, to support framing.
--- a/spec/latest/json-ld-api/index.html Wed Apr 11 14:10:42 2012 -0700
+++ b/spec/latest/json-ld-api/index.html Wed Apr 11 14:46:45 2012 -0700
@@ -1237,8 +1237,9 @@
property from <em>element</em>.</li>
<li>If the <em>property</em> is <code>@id</code> the <em>value</em> MUST be a <tref>string</tref>.
Expand the <em>value</em> according to <a href="#iri-expansion">IRI Expansion</a>.</li>
- <li>Otherwise, if the <em>property</em> is <code>@type</code> the <em>value</em> MUST be a <tref>string</tref> or an
- <tref>array</tref> of <tref>string</tref>s. Expand <em>value</em> or each of it's entries according to
+ <li>Otherwise, if the <em>property</em> is <code>@type</code> the <em>value</em>
+ MUST be a <tref>string</tref>, an <tref>array</tref> of <tref>string</tref>s, or an empty
+ <tref>JSON Object</tref>. Expand <em>value</em> or each of it's entries according to
<a href="#iri-expansion">IRI Expansion</a>.</li>
<li>Otherwise, if the <em>property</em> is <code>@value</code> or <code>@language</code> the <em>value</em> MUST NOT be a
<tref>JSON object</tref> or an <tref>array</tref>.</li>