t: The FD must be writable; it becomes child's stdout.
.err: The FD must be writable; it becomes child's stderr.</pre>
</div>
</div>
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<div class="content">
<pre>The specified FD is closed by start_command(), even if it fails to
run the sub-process!</pre>
</div>
</div>
</li>
<li>
<p>Special forms of redirection are available by setting these members
to 1:</p>
<div class="literalblock">
<div class="content">
<pre>.no_stdin, .no_stdout, .no_stderr: The respective channel is
	redirecte