<mime-type type="application/mbms-register-response+xml"/>
  <mime-type type="application/mbms-user-service-description+xml"/>

  <mime-type type="application/mbox">
    <!-- MBOX files start with "From [sender] [date]" -->
    <!-- To avoid false matches, check for other headers after that -->

    <magic priority="70">
      <match value="From " type="string" offset="0">

begins. Communication blocks until the send can proceed.
A send on an unbuffered channel can proceed if a receiver is ready.
A send on a buffered channel can proceed if there is room in the buffer.
A send on a closed channel proceeds by causing a <a href="#Run_time_panics">run-time panic</a>.
A send on a <code>nil</code> channel blocks forever.
</p>

<pre>
ch &lt;- 3  // send value 3 to channel ch
</pre>

<p>